Vintage Wide Mouth Presto Canning Jar Aluminum Ring Seal 3.5" wide Very good condition. "Tested and Approved by the Good Housekeeping Institute...""Delineator Home Institute Endorses..." *Please note - 6 out of the 7 I have available are a bright, lighter silver, while 1 is darker and has more "patina" - please see photos! If you have a preference, please note that in your purchase, and when the darker one has sold I will remove this from the listing.