A Wide Mouth 2 Quart Kerr Self Sealing Canning Jar produce by Alexander H. Kerr & Company. This Kerr Wide Mouth Canning Jar is marked on the bottom "AHK above the numbers 520 and a 7" off to the side. This Jar stands 9 inches tall and is 4 1/2 inches square. The front of the Canning Jar reads "Kerr, Self Sealing and Wide Mouth Mason". The code H73 is along the top. The Kerr Jar is in perfect condition.