Question: Are old Kerr jars worth anything?

The value of antique Ball, Mason and Kerr canning jars varies greatly. Typical prics range from $8 to $25 a jar.

What do the numbers on the bottom of Mason jars mean?

Many Ball mason jars have a number printed on the bottom of the jar, but this is a mold number that does not indicate the year of production. Rather, the mold number tells you where the jar was positioned on the glass-making machine that was used to produce it.

What are Kerr Mason jars worth?

Typical values: The value of antique Ball, Mason and Kerr canning jars varies greatly. Typical prics range from $8 to $25 a jar.

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