Antique Kerr Self Sealing Mason Jar — Aug. 31, 1915 Patent Mark — Zinc Lid & Milk-Glass Liner

Antique Kerr Self Sealing Mason jar with clear glass, visible bubbles, a zinc screw closure, and a milk-glass liner.

• Maker: Kerr Glass Manufacturing Company
• Marking: Kerr Self Sealing; photographed base/embossing includes the Aug. 31, 1915 patent date
• Closure: Antique zinc lid with milk-glass liner; because these removable closures were interchangeable, it is not represented as original to this exact jar body without provenance
• Condition: Review the photograph for glass character, embossing, rim, closure, and exact condition

Dating note: Aug. 31, 1915 is the date of Alexander H. Kerr’s preserving-jar patent, not proof that this individual jar was manufactured in 1915.