Unlocking the Secrets of Star-Embossed Mason Jars: A Collector’s Guide
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The Mason jar with a star located between the words “Mason” and “Jar” was most likely manufactured in the 1970s by Owens-Illinois Glass Co. at their Alton, IL plant. These jars are a distinctive variant that deviates from the more common Ball or Kerr jars and are considered a treat for collectors.
Decoding the Markings: Identifying Your Star Mason Jar
Determining the age and origin of a vintage Mason jar can be a fascinating dive into glassmaking history. While the star-embossed Mason jar narrows the timeframe considerably, understanding the context of Mason jar manufacturing helps appreciate its significance.
Owens-Illinois and the 1970s Star
Owens-Illinois (O-I) was a massive player in the glass container industry. The presence of the star suggests a particular branding or production period for a specific product line.
A Note on Rarity
While not the rarest of all Mason jars, star-embossed jars have a certain appeal due to their unique design. Their value is often tied to condition, color (if any variations exist), and the enthusiasm of collectors. Keep an eye on online auction sites and antique dealers for comparable prices.
Mason Jar History: A Brief Overview
To understand the significance of a 1970s star-embossed jar, it helps to understand the evolution of the Mason jar itself.
The Original Patent
John Landis Mason patented the Mason jar in 1858. His innovation was the screw thread mouth, designed to create an airtight seal with a metal lid and a rubber ring.
Early Manufacturers
The Ball Brothers Glass Manufacturing Company (BBGMC) became synonymous with Mason jars. Their early jars featured an intertwined BBGMC logo. Other manufacturers included Kerr, Atlas (Hazel-Atlas Glass Company), and others. Each brand had its distinctive markings and manufacturing periods.
Logo Evolution
Manufacturers frequently updated their logos. These changes are crucial for dating jars. Identifying marks such as “IMPROVED,” “PERFECT,” or “IDEAL” also provide clues about the manufacturing period.
The Shift Away from Home Canning
The popularity of home canning declined after the mid-20th century as commercially processed foods became more readily available. While Mason jars are still manufactured today, the older, more unique versions attract collectors.
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Caring for Your Vintage Mason Jar
Whether you plan to display or gently use your star-embossed Mason jar, proper care is essential.
Cleaning
Hand-washing is generally recommended for vintage glass. Avoid harsh chemicals or abrasive cleaners that could damage the glass or any applied decorations.
Storage
Store your jars in a cool, dry place, away from direct sunlight, which can fade colored glass. Consider padded storage if you plan to move them frequently.
Safety Considerations
While vintage Mason jars are visually appealing, be mindful when considering using them for food preservation. They may have imperfections or weaknesses that could lead to breakage during the canning process. They are better suited for decorative uses and dry storage.
Frequently Asked Questions (FAQs)
Here are some frequently asked questions to help you deepen your understanding of Mason jars.
1. How can I accurately date my Mason jar?
Check the logo first. Many companies changed logos over time. Researching manufacturer timelines can help narrow the production year. Also consider phrases like “PERFECT MASON” or patent dates embossed on the jar.
2. What is the rarest Mason jar?
One notable example is the Upside-Down Ball jar. It was designed to sit on its lid, making it popular with collectors.
3. What years were “Perfect Mason” jars made?
The very first jars marked “BALL PERFECT MASON” are believed to date from approximately 1913, with production continuing to about 1960.
4. How old is a Drey Perfect Mason jar?
Shoulder-seal Drey Masons and Drey Perfect Masons are often dated to 1910-1920. Bead-seal jars of both types are dated around 1920.
5. How old is a Knox Mason jar?
The Knox jars were made in the 1940s by the Knox Glass Bottle Co.
6. What did the first Mason jar look like?
The first Mason jar, patented in 1858, had a screw thread mouth, a metal band, and a lid with a rubber ring on its underside. They were typically made from transparent aqua glass.
7. What is the lifespan of a Mason jar?
Canning jars have a life expectancy of 10 to 13 years when used for canning, after which the wear and tear of normal use increases the risk of breakage.
8. Are vintage Mason jars safe to use for canning?
It is generally not recommended to use vintage canning jars for food preservation due to the risk of breakage. They are better suited for decorative purposes.
9. How can you tell if a Mason jar is sealed properly after canning?
Tap the lid with a teaspoon. A sealed jar will produce a ringing, high-pitched sound. A dull sound indicates that the lid is not properly sealed.
10. What is the difference between Mason jars and Ball jars?
The term “Mason jar” is generic for glass canning jars. “Ball jars” are Mason jars specifically manufactured by the Ball Corporation.
11. Why are Mason jar lids two pieces?
The two-piece lid consists of a lid with a rubber ring (designed for single use to ensure an airtight seal) and a screw-on band (reusable) to hold the lid in place during processing.
12. When were Kerr self-sealing Mason jars created?
Kerr self-sealing jars were created in 1903 by Alexander H. Kerr.
13. What are the oldest glass jars in existence?
Around 1500 B.C., the Egyptians produced the first hollow glass containers for ointments and oils.
14. How old are Atlas Mason jars?
Atlas Mason jars were made by the Hazel-Atlas Glass Company, which operated from 1902 to 1964.
15. How old are Gem jars?
Gem Jars were manufactured in Canada from the late 1920s through the 1930s and were only ever manufactured in Canada.
Hopefully, this in-depth look into star-embossed Mason jars, alongside the FAQs, has helped you learn more. Happy collecting!
Vintage glass has an inherent beauty that reminds us of days gone by. Whether used for storage or display, it’s a tangible link to the past.