Dating mason jars
Dating the Logo Locating Other Identifying Marks Knowing What Marks and Labels to Disregard Community Q&A 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.
Ball Perfect Mason – Half Gallon & Quart sizes " data-medium-file="https:// data-large-file="https:// class="size-large wp-image-1339" title="Ball-Perfect-Mason-Jars" src=" alt="Ball Perfect Mason Jars- Half Gallon & Quart sizes" width="640" height="629" srcset="https:// https:// https:// sizes="(max-width: 640px) 100vw, 640px" / Most of the earlier versions were round (cylindrical) in shape, and some of the later types are square (with rounded corners) in design.
Some variants have vertical “ribs” or “grips” along the sides, probably added to assist in handling the jars while they are wet.
A number of factors go into the final value of a canning jar.