Introduction

Ball Mason jars have been around for over a century and are a staple in many households. These sturdy, reliable jars were first patented in 1858 by John Landis Mason, and the Ball Corporation later began manufacturing them. They serve multiple purposes, from canning fruits and vegetables to storing various items. Due to their versatility and durability, Ball Mason jars are sought after by collectors, enthusiasts, and hobbyists alike. Figuring out the age of a Ball Mason jar can be challenging, but using this guide, you’ll learn how to date these jars with confidence.

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 late 1910s or early 1920s.

– The script “Square ‘B'” jars were produced in the 1920s.

– A simpler script “B” without a square around it was made from 1933-1962.

2. Check the Mold Number

The mold number indicates which mold was used to produce the jar. This number can usually be found on the bottom or side of the jar, along with other information like size or patent number.

– Numbers above 12 are typically older (pre-1930).

– If there is no mold number at all, it could signify that it is a handmade jar from before 1896.

3. Inspect the Lid

Older Ball Mason jars used different types of lids than modern versions:

– Zinc lids with porcelain inserts were common between 1858 – mid-1910s.

– Glass lids with rubber seals were used from the 1900s – 1940s.

– Metal screw-on lids started gaining popularity in the 1920s, including those with a glass insert.

4. Color of the Jar

The color of your Ball Mason jar can also provide insight into its age. Early jars were typically clear, but later versions featured various colors like blue, green, and amber. The most popular color, Ball Blue, was produced between 1896-1937.

5. Production “Errors”

Older jars often bear small imperfections such as air bubbles and imperfections in the lettering. These minor flaws can help you establish a more precise production date based on specific errors unique to certain time periods or production lines.

Conclusion

Dating old Ball Mason jars can be a fun and interesting hobby. By observing the logo, mold number, lid type, jar color, and any production errors, you will have a better understanding of your jar’s history. Whether for collecting or simply admiring beautiful antiques, knowing how to date Ball Mason jars is both informative and rewarding.