How to tell the age of mason jars

Image Credit. You'll find old bottles in colorless varieties, as well as a wide range of colors, including amber, blue, purple, and green. Sometimes color served a purpose that's related to the contents of the bottle. For example, some amber and other dark bottles may be that color because the contents were sensitive to light.

C.1813-20. Mark 3. Impressed in one line 'Mason's Patent Ironstone China'. C.1813-20. Mark 4. Transfer printed crown with banner (colour washed with the last paint colour of the day) also showing a round impressed circle mark. C.1813 - 1820. Mark 5. Transfer printed blue or black with banner, note the.A new Mason jar collector should look for jars from a variety of years and made by several companies, such as Ball, Atlas and Kerr. Mason jars come in hundreds of shape, sizes, col...1. Look for the Logo. The most common and easiest way to date old Ball Mason jars is by looking at the logo on the jar. Over time, the company’s logo has evolved. Here is how you can determine your jar’s age using the logo: – Jars with three “L’s” in “BALL” are among the oldest (1896-1910). – Jars with two “L’s” indicate ...Question the seller to see if you can get the story on how the jars were used and stored. Examine the jars for nicks, cracks and chips. Using jars from commercial foods is not a recommended practice. There are some jars that even say "Mason" on them but they are not a true pint or quart jar and do not have the flat rim for a lid to tightly ...Cover the mouth of the mason jar with a cloth and secure it with a rubber band or twine. This allows air to flow in and out of the jar, but prevents dust or insects from getting into the jar. Press the cabbage every few hours. Over the next 24 hours, press down on the cabbage every so often with the jelly jar.Kerr mason jars are a popular item among collectors and antique enthusiasts. Dating these jars can be a challenge, but with a little research and knowledge, it is possible to determine the age of Kerr mason jars. The first thing to note is that Kerr mason jars were produced by the San Francisco-based Ball-Glass Manufacturing Company.See how you can adjust recipes based on your altitude. Step-by-step guides for canning, pickling, freezing, dehydrating, and more make preserving your favorite foods easy and delicious. Learn more.

Tie a bow on top. Dress up the top of the jar with the help of a bow. Wrap the ribbon around the top of the jar and tie a pretty bow. Use a little bit of glue to hold the bow in place. Wrap multiple times. Create a unique look with your ribbon by cutting a long piece and wrapping it around the jar multiple times.Key to antique canning jars identification is the recognition of brand names such as Ball, Mason, and Atlas, whose embossed lettering often indicates a jar's age and authenticity. Other tell-tale signs include the style of the jar's closure - from zinc lids to glass lids with wire bails - and the color of the glass, which ranges from aqua blue ... The Hazel-Atlas Company was an actual company from 1902 to 1964. They made actual Mason jars for home canning. But the Atlas "Mason" jars that you see now pasta sauces, etc., sold in are not actually made as actual, genuine Mason jars. Aug 3, 2015 - Kerr self-sealing jars and the Kerr Economy were created in 1903. One vintage amber glass jar recently sold for $375, while many fall in the $10-$20 range. You can find them in several sizes: half-pint, pint quart and gallon. Even though many Atlas Mason jars are marked with dates, they aren’t always reliable for determining age as some molds were used for years.It all started with John Landis Mason, a New Jersey-born tinsmith who, in the 1850s, was searching for a way to improve the relatively recent process of home canning. Up until then, home canning ...

Updated May 26, 2023. John Greim/LightRocket via Getty Images. If you've been canning your own fruits and vegetables for years, then you know exactly how little mason jars have changed. An old glass on your shelf …Vintage Mason Jar Colours. Mason jars were manufactured in many different colours, including clear, pale blue, yellow, amber, olive and various other greens. (In the early 1900s, people thought darker glass helped prevent food from spoiling as quickly.) The rarest of the jar colours are green and have been known to fetch upwards of $300 per jar ...Place the lids in a bowl full of distilled white vinegar. Leave it to soak for a while, or at least until you see all of the rust disappear. If, even after a while, the rust is still persisting, then take a steel wool scrubber to scrub off any of the remaining orange.They're getting better at making these hard to spot. This batch consists of pints and quarts embossed: MASON'S PATENT NOV 30TH 1858 (note no period after NOV) and 1/2 gallons embossed: MASON'S (Hero Cross) PATENT NOV. 30TH 1858. The pints all have the number 44 embossed on their base and the quarts have a weakly …Both Kerr and Ball jelly jars have a 3-inch diameter, with a 3.4 inch height. A dozen Kerr jars has a shipping weight of 3.5 lbs. A dozen Ball jars has a weight of 4 lbs. Four-ounce Ball jelly jars have a 2.9-inch diameter and a height of 2.3 inches. The dry weight for a dozen jars is 3 lbs. Landi Mason patented Mason jars in Philadelphia in 1858.

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Determining Value of Mason Jars Age. One of the primary factors affecting the value of a Mason jar is its age. Older jars typically hold more value as they are often rarer and more desirable to collectors. For instance, jars from the late 19th and early 20th centuries can be more valuable than their modern counterparts.Check the jar from top to bottom. The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between 1915 and 1930. The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was ...Location. California. According to Dick Roller's Standard Reference, the Atlas Strong Shoulder Mason was made by Hazel-Atlas between 1919 and 1950. They were made for a very long time with little distinction between the very early and the very late editions. There were a lot of 'em made, but they don't make 'em any more.Due to the rich history, glass bottles are considered collectible antiques. Normally, the older a bottle is, the more expensive it is, so it is very important to know the correct age of a bottle. Knowing the age of your glass bottles will help you get a fair deal if you plan to sell them.Location. Newark Ohio. perhistoric trash mound mabey [] its a indian mound prob. a siginal mound its on top of a hill and it gives a nice 360 from the top there are a lot of mounds in newark all over the licking valley if i cant find bottles i look for arrowheads. Dec 16, 2006. #8.Oct 3, 2023 · How to Value Atlas Mason Jars. Most Atlas mason jars are worth around $5 to $25 in good condition, but some unique jars with a rare color or style can fetch up to $150. Generally, an Atlas Mason jar’s value depends on many factors, such as condition, size, age, color, and style. Based on these factors, you can assess the value of your jar ...

1 Current state of Gem lids; 2 Why were the Gem jars so popular?; 3 Gem lids and Agee jars in New Zealand; 4 Gem canning rings; 5 Closures for Gem Mason Jars: Metal versus glass; 6 History of Gem Jars. 6.1 Discontinuation of the jars; 6.2 Discontinuation of the lids; 6.3 Why the lids were discontinued; 6.4 Push-back from Canadian canners; 6.5 Canners …Ball mason jars are a type of home canning jar made by the Ball Corporation. The company started making mason jars back in 1880, and many people today still use these for canning, or collect the jars as a hobby. ... If you find a jar with an error, find a copy of the Redbook (a price guide for fruit jar collectors) to determine the age and ...How much is that cookie jar? As seen on Discovery channel's Auction Kings, Ph.D. antiques appraiser Dr. Lori explains how to use the size of your cookie jar ...Don't fill Mason jars to the top: Food expands as it freezes. As it expands, pressure can build in the jar and break the glass. For this reason, leave at least one inch of space at the top of the jar to allow for expansion. Wide mouth Mason jars typically include a freeze-fill line on the side for reference.Step 8: Add more pebbles to cover the growing cube. Be gentle and cautious when handling the tender seedling. Step 9: Place the jar in a sunny spot or under artificial lighting. Step 10: Add water only when the water line has been down for a few days. Do not add water as soon as the water is no longer touching the net.GoodLife Metal Lids (Ball and Agee Compatible) $12.50. Kiwi Family Kitchen Gift Card. from $10.00. Agee jars are an NZ icon! With a sense of nostalgia, we offer Agee preserving jars to you for purchase singly or in bulk packs. These jars are compatible with Ball mason jars so you can use lids and bands interchangeably - perfect!YINGERHUAN Glass Regular Mouth Mason Jars, 16 oz Clear Glass Jars with Silver Metal Lids for Sealing, Canning Jars for Food Storage, Overnight Oats, Dry Food, Snacks, Candies, DIY Projects (4PACK) 4.6 out of 5 stars 3,644From petite 4 oz jars for delightful favors to spacious 32 oz options for substantial storage, our range caters to every need. Elevate your packaging, crafting, and gifting with precision-crafted glass jars in various sizes. 2oz glass jars 4oz mason jars 8oz jars 12oz mason jars 16oz mason jars 1 gallon mason jar

The Ball jar shape and stackable ball jar lid design are space-efficient in your kitchen and pantry, and the super-wide mouth mason jar opening offers easy access to what's inside. View all our canning, preserving, and pantry storage Ball jars ideal for canning, pantry organization, creative décor, gift giving, and more. Explore now!

A collection of Mason jars filled with preserved foods. A Mason jar, also known as a canning jar, preserves jar or fruit jar, is a glass jar used in home canning to preserve food.It was named after American tinsmith John Landis Mason, who patented it in 1858.The jar's mouth has a screw thread on its outer perimeter to accept a metal ring or "band". The …With so many different Mason jar sizes and manufacturers, it can be difficult to know what size Mason jar you have or what size Mason jar lid will fit your jar. Mason Jar Size - The Size of the Mason jar can be great for everything from jelly to storing sugar or flour. Choose from a wide variety of sizes.When it comes to finding the best of British cuisine, Fortnum and Mason is the place to go. This iconic London department store has been providing gourmet food and fine dining expe...Vintage Presto Supreme Mason from the 1930s. Quart size mason with Duraglas and D 74 stamped on the front of the jar. The base of the jar has a unique pattern and writing. It is stamped Owen Illinois Glass Company. With a symbol of a circle and diamond. On the left there is a 2, underneath a 7 andThese jars vary in value depending upon their age, rarity, design, and condition. The most valuable antique jars were made between the 1880s and the 1920s, and include Ball Perfect Mason, Improved Gem, and Brothers Perfect Mason jars. Jars made in the 1940s and 1950s, such as Ball Ideal, Atlas E-Z Seal, and Kant-Twist jars are also valuable.Here’s a guide on how to date Atlas mason jars. Find an Atlas Mason jar. These jars were produced by the Atlas Glass Company from 1868 to about 1912, so look for them at antique stores or online auctions. Check the bottom of the jar for a patent date. Jars with a patent date of 1858 are the most valuable, as they’re the oldest.7. Foreign particles may be blocking the hole in the attachment. 8. If you use a hand-held sealer, you may not be pressing firmly enough or at the right angle. 9. If you use a countertop vacuum machine with a port, your hose may not …Phrases like “improved,” “special,” “perfect,” “sanitary,” “ideal,” “square” and “eclipse” can all help identify the year of your jar. For example, this Ball Mason jar with the phrase “perfect” on the bottom is …Jul 10, 2019 ... IDK why - but I. AM. EXCITED. for this video. JAZZ HANDS. Think you can't freeze stuff in mason jars? Think again! CHECK OUT MY BOOK!

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Age is one of the most important factors impacting the price of an Atlas Mason jar. The older the jar, the more likely it’s going to be expensive. However, it’s not that easy to tell how old a specific jar is , but there are several characteristics and indicators that can help you to do it successfully:Factors Affecting the Value of Antique Milk Glass. If you are considering buying some antique milk glass or you have a few pieces already, it's helpful to know how to determine the value. Most milk glass you find in antique stores, garage sales, and online will sell in the range of $10 to $30 per piece.Updated May 26, 2023. John Greim/LightRocket via Getty Images. If you've been canning your own fruits and vegetables for years, then you know exactly how little mason jars have changed. An old glass on your shelf …Properly identifying and dating an Atlas Mason jar is essential for determining its value and historical significance. To determine the age of an Atlas Mason jar, consider the following factors:Vintage Ball Mason Jar - Quart sized Mason Jars - Ball Jars - Wedding Décor - Outdoor Décor - Quart Size Ball Jars - 1910 - 1923 (798) $ 10.00. Add to Favorites ... Under "Add your personalization," the text box will tell you what the seller needs to know. Fill out the requested information.To date an old Ball mason jar, look at the logo on the jar. If the logo is an insignia made up of the letters BBGMC, the jar was made between 1885 and 1886. If the logo is written using block letters, the jar was likely made between 1892 and 1896.We even have some that are verified as 100+ years old! So, that begs the question: HOW DO YOU DATE YOUR BALL JAR? 🧐. To answer that, compare the logo …How to tell real genuine Atlas Mason jars. You may see at yard sales or flea markets real, genuine Atlas Mason jars, made by the Hazel-Atlas company, floating about inexpensively. All their Mason jars had the symbol HA on them; it stands for “Hazel-Atlas”, with the A tucked under the H.Mix in a small amount of sand to fill in the spaces between the stones and keep the soil from shifting. 3. Fill the jars with potting soil. Scoop the soil into the opening of the jars, stopping when they're about three quarters of the way full.To get a little more help in determining the age of your jar, visit the Minnetrista Heritage Collection and do a keyword search on "Ball jar." Match your jar to one of those listed and check the dates. You can also go to the Midwest Antique Fruit Jar and Bottle Club website, click on "When was my Ball jar made?" and follow the instructions.Due to the rich history, glass bottles are considered collectible antiques. Normally, the older a bottle is, the more expensive it is, so it is very important to know the correct age of a bottle. Knowing the age of your glass bottles will help you get a fair deal if you plan to sell them. ….

ZHANXUBIO Airtight Mason Jar Lids Built-In Stash Hygrometer Herb Curing monitor fits all Wide Mouth/Regular Mouth Mason Jars humidity lid 2pcs (86mm, Yellow) 3.7 out of 5 stars 35 2 offers from $16.99Short answer dating atlas mason jars: Atlas Mason Jars can be dated by looking at the embossing on the jar. The presence or absence of certain markings, such as the mold number and patent dates, can help determine their age. Additionally, changes in the logo design over time can give clues to their manufacturing period. The Ultimate Guide to ...Jan 4, 2012 ... What is this? Report Ad. The next group is the wide mouth Kerr assortment. These come in quart, pint and half pint sizes. Of all ... Another way to tell the age of a mason jar is by looking at the lid. The earliest lids were made of zinc and had no screw threading. These lids were replaced by glass lids with screw threads in 1908, so if your mason jar has a screw-on lid, it was most likely made after 1908. The age of your mason jar can also affect its value. Kerr Vintage 1920s - 1930s Economy Wide Mouth Quart. No reviews No questions. $31.99. Kerr Vintage 1940s Round Body 'Self Sealing' (Trade Mark Reg.) Regular Mouth Quart Sold Out. A Brief History of Kerr Mason Jars The Kerr Glass Manufacturing Co. began in Portland, OR in 1904. Though it was not actually a manufacturer at its inception, Kerr ... Check the age. Older Mason jars are more likely to be valuable than newer ones. If you know when your jars were made, check online to see if they fall within a certain range of years that collectors are interested in. 2. Look …Most jars have an indicator on the rim for guidance. Use a spatula to press down the contents all around the jar, packing as tightly as you can. Wipe the jar; then place the lid over the top. Screw down the lid with the band. Your Mason jar is sealed.Mason jars suggest resistance to the mass production of food and culture; they emphasize the values of self-sufficiency and community. 7-Eleven's marketing strategy, however, demonstrates how ...Jan 20, 2022 · How do you tell if a Mason jar is a reproduction? Some of the mold numbers that may be seen on the bottoms that usually indicate a fake jar include 1171, 851, and 971. Reproduction jars are known in many colors : ruby red glass, cobalt blue, black glass, bright greens, ambers, purple, olive green, yellow, citron, and other colors. How to tell the age of mason jars, The value of an old Ball Mason jar depends on its age, condition and rarity. The most common and oldest ones are worth about $5, while the rarer ones can go for up to $50. Credit: adirondackgirlatheart.com . Mason Jar Collectors Guide . There’s something about mason jars that just makes them so darn charming., Add a personal flair to your kitchen with this easy-to-follow, rewarding DIY task that results in a unique and stylish lighting feature. 5. DIY Shabby Chic Silver Mason Jar Lamp. Transform your craft room with a touch of shabby chic elegance by making your own silver mason jar lamp, as showcased on Joy's Life., Mason Jar Lids Regular Mouth Canning Lids for Ball, Kerr Jars - 24-Count Split-Type with Leak proof & Airtight Seal Features, Metal Mason Jar Lids for Canning - Food Grade Material, Silver/70 MM 4.3 out of 5 stars 4,146, 10. WILLOUGHBY STOPPLE. When this 1858 jar's two- plate top with a wingnut proved defective, most were thrown out. Today the scarce find proves that one era's trash is another's treasure. VALUE: $500. Today, Ball is the most sought- after brand. Here's a cheat sheet to determining a jar's approximate age: These vintage mason jars from the 1840s ..., Atlas Wholefruit Jar (Source: Ebay) You can quickly tell this Atlas mason jar by the “Atlas Wholefruit Jar” inscription. The “Whole Fruit” crosses the middle of “Atlas” and “Jar” diagonally. Atlas Whole Fruit jars come in pints, quarts, and half gallons. They’re round and suitable for storing dry ingredients. 4., Traditionally, mason jars come in various sizes, each serving a different purpose based on its capacity. The most common sizes you'll find are half-pint (8 ounces), pint (16 ounces), quart (32 ounces), and half-gallon (64 ounces) jars. These measurements refer to the volume of liquid that can be contained within the jar., 1. Look for the Logo. The most common and easiest way to date old Ball Mason jars is by looking at the logo on the jar. Over time, the company's logo has evolved. Here is how you can determine your jar's age using the logo: - Jars with three "L's" in "BALL" are among the oldest (1896-1910). - Jars with two "L's" indicate ..., How can you tell how old a golden Mason jar is? The rubber ring on the lid provided the seal. For Ball jars, you can date them by looking at the logo, as it has changed many times. I’ll give you a link for that later in the post. These jars have the Ball name in script, with the center of the ‘B’ straight (not looped)., Ball mason jars are a type of home canning jar made by the Ball Corporation. The company started making mason jars back in 1880, and many people today still use these for canning, or collect the jars as a hobby. ... If you find a jar with an error, find a copy of the Redbook (a price guide for fruit jar collectors) to determine the age and ..., Apr 4, 2018 - A guide to determine the age and rarity of your Ball mason jar. Apr 4, 2018 - A guide to determine the age and rarity of your Ball mason jar. Apr 4, 2018 - A guide to determine the age and rarity of your Ball mason jar. Pinterest. Nakupovat. Prozkoumat. Přihlásit se. Registrace., Via The Crafted Sparrow. Going off the stripe theme, here's another way to beautify your jars, create a white paint base for them, and then use a nice bright color to stripe them. You can make your stripes as thick or as thin as you want. I often find I like the look of thick stripes the best. Via Suburble., Add a personal flair to your kitchen with this easy-to-follow, rewarding DIY task that results in a unique and stylish lighting feature. 5. DIY Shabby Chic Silver Mason Jar Lamp. Transform your craft room with a touch of shabby chic elegance by making your own silver mason jar lamp, as showcased on Joy's Life., The adapter fits all standard pumps to include Spectra, Medela, Lanisoh and Ameda and attaches flawlessly to regular mouth mason jars with nothing but either a metal or plastic ring. Since our Storage jars have a single piece lid, if you are using them, make sure you grab a pack of rings as well if you don't have any metal ones at home., Look over the body of the canning jar to look for any cracks and fractures in the glass. If you can with a glass jar that has a fracture in it, even a small one, the pressure of the contents inside when canning will blow out your canning jar from that weak point in the glass. Look closely on the bottom of the glass jar for a circular crack., Blue Mason Jar Number 13 Value. Mason jars are a popular item among collectors. The most common type of Mason jar is the blue jar. The value of a blue Mason jar can vary depending on its age and condition. A newer, mint condition jar may be worth around $15, while an older, more well-used jar may be worth less., 1 1/2 Pints (maybe? about 7 inches high.) 1957. 2 Pints (again, maybe. Also 7 inches high, but the jar is wide until the 6-inch mark before it starts to slim.) Crown 1933, 1941, 1943, 1944, 1948, 1949, 2 dateless. Corona 2 dateless. 5 Pints? (9 inches high) 1953. I have more jars that I need values on, so please view my posts if you know about ..., Most of the typical earlier Ball Perfect Mason jars in aqua or Ball Blue are marked with a mold number between 0 and 15 on the bottom. On some jar variants, (such as the first BALL embossing variant on these jars, “Logo 5” in chart shown below, used circa 1913-1923 on BPM jars), the number may be accompanied by a letter to the right, such as A or C., The Original Mason Jar Is Born. In the days before refrigeration, it was a challenge to keep food from spoiling. Early efforts by the French in 1806 involved finicky, messy wax seals on dark jars, which wasn’t too effective. And that method was far too complicated for widespread home use. That all changed in 1858, thanks to John Landis …, Crown jars are found with ground lip or smooth lip, and were made by several different glass houses in Canada. Generally speaking, jars in clear or aqua will bring about $2 - $5. There are some variations that are worth a lot more, but this jar appears to be one of the more common ones. Look for distinctive crown designs and desirable colors ..., Age. Early milk glass examples from the late 1800s and early 1900s are considerably rarer than milk glass from the 1960s. Quality. Be aware that companies are producing milk glass today. Look at the color and texture to determine if a piece is old. Old milk glass tends to be smoother than new, rough milk glass., About this item . 6 PACK - This Mason Jar bundle comes with (6) 16 oz Regular Mouth jars. The jar's sides end with "12 oz" and the rest of the space between the end of the marking scale and the lid amounts to 4 oz , thus this means that altogether the capacity of the jar is 16 OZ., Dating knox mason jars. Companies experimented with numerous types of closures, most of junk were very detailed, junk, and impractical. Junk is always good to find a jar with an zinc lid! Age Check for mold seams. Early jars thick show a seam below the lip. The absence of a mold seam on the lip indicates the jar drey finished by hand., Stock a third jar with clothespins to line-dry delicates. Set the jars in a shallow container or tray, which can hold other clothing care essentials like a lint brush or sweater shaver. 3. Silverware Caddy. This Mason jar storage project repurposes a vintage metal caddy found at a flea market as a silverware holder., Consider the Styles of the Atlas Mason Jars: Another way to determine the value of Atlas Mason jars is to look at the styles. Atlas Mason jars are available in a variety of sizes and shapes, including quart, pint, and half-pint, but the value of some Mason jar styles is significantly higher than that of others., Find out more in this canning jar lid guide. How canning lids work: As the food in the jar is being processed, oxygen will be pushed out of the jar. The sealing compound in the lid warms and softens fitting itself tightly against the jar. As the food cools, the contents shrink and the lid will be sucked down and form a tight seal protecting the ..., The Mason jar was patented by Landis Mason in 1858 and Ball started producing these jars in 1885. Later, the process was “perfected” by Ball in 1913 when his factory was able to produce both the lid and jar to ensure a perfect fit each time. frankieleon. Ball jars were made in various colors, but the blue and clear colors are the most common., Fill the glass jars about 3/4, leaving some room at the top. The buds should move freely when you shake the jar. If they stick together, they probably still have excess moisture and need to be dried a little longer. In this case, just leave the mason jar open for a while so the water can evaporate., Painted Mason Jars on the Inside. Yield: 1 Painted Mason Jar. Prep Time: 10 minutes. Active Time: 10 minutes. Additional Time: 1 day. Total Time: 1 day 20 minutes. Difficulty: Easy. Estimated Cost: $2-$3. Get the smoothest finish on painted mason jars by pouring paint on the inside of the glass jar., The " MASON'S / PATENT / NOV 30TH / 1858 " phrase was originally embossed on countless "screw top" glass fruit jars (canning jars), most ranging in age from circa 1858 to the mid-1910s. Note: many reproductions of these jars have been made (from the 1970s all the way up to the present time), which are discussed later in this article., Richard Cole is curator of the home canning jar collection at the Minnetrista Cultural Center, 1200 North Minnetrista Pkwy, Muncie, IN 47303-2925, (765) 282-4848, Ext. 117. Kovel's On-Line Price Guide to Antiques and Collectibles. Antique jars are highly collectible., One vintage amber glass jar recently sold for $375, while many fall in the $10-$20 range. You can find them in several sizes: half-pint, pint quart and gallon. Even though many Atlas Mason jars are marked with dates, they aren’t always reliable for determining age as some molds were used for years., Types of Antique Mason Jars. Cork-Top Jar. Self-Sealing by Kerr. Screw-Top Mason Jar. Improved By Hero. Upside-down. E-Z Seal by Atlas. Lightning Jar by Ball. Beaver Jar. Violet Jar by Columbia. Sun Jar by Bartow. Willoughby Stopple Jar. Identification of Antique Mason Jars. Glass Markings. No Owen Scar. Lettering., Phrases like "improved," "special," "perfect," "sanitary," "ideal," "square" and "eclipse" can all help identify the year of your jar. For example, this Ball Mason jar with the phrase "perfect" on the bottom is approximately from 1913-1922.