Vintage Presto 21 Qt Pressure Cooker - Canner Model 21-B Complete - Ruby Lane
Presto® 16-Quart Pressure Canner and Cooker 01745 - Walmart.com
I was just gifted my great grandmother's Presto Cooker Canner no. 21. I know almost nothing about canning but can't wait to get started! It looks like it is missing a piece (