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 (
50332 3-piece Pressure Canner Weight for Presto Pressure Canner Cooker, 5-10-15lb Pressure Regulator Parts fit Models 0175001, 0175510, 0178107, 0178410 etc. for 6qt/16qt/18qt/20qt/21qt/22qt/23qt etc. : Amazon.ca: Home
The Best Pressure Canners in 2023
Presto 23 Qt. Pressure Canner/Cooker - YouTube
The Best Pressure Canners of 2023
Presto 23 Quart Aluminum Pressure Canner and Cooker - Walmart.com