Mason Jar Value Guide

Invented by John Landis Mason in 1858, these threaded glass jars revolutionized home food preservation in the United States. While originally standard household items, examples from the 1900-1940 era are now highly collectible due to their unique glass hues and historical embossing.

What affects the value of Mason Jar?

• Glass color significantly impacts price, with rare aquamarine or amber shades fetching more than clear glass.
• The presence and condition of the original metal lid and rubber seal increase the market value.
• Specific embossing errors or rare manufacturer logos from the 1900-1940 period drive collector interest.
• Overall glass clarity and the absence of chips or 'sick glass' cloudiness determine the $15-$35 price range.

How to Identify Mason Jar?

• Look for the 'Mason's Patent Nov 30th 1858' embossing on the front of the glass.
• Check for a zinc screw cap or a glass lid with a metal band, typical of early 20th-century designs.
• Examine the glass for bubbles or slight imperfections common in manufacturing between 1900 and 1940.
• Identify specific maker marks on the base, such as Ball, Kerr, or Atlas, which indicate the production era.

History of Mason Jar

Mason jars were invented and patented by John Landis Mason in 1858. Their threaded glass lids allowed a reusable sealing system that revolutionized home canning. Over the late 19th and early 20th centuries they became standard household items; colored glass varieties and different maker embossing make some examples collectible today.