I've some 12 & 16 sg shells from about 45 or so yrs ago. Alcan is the brand. It was no doubt the cheapest stuff I could find back then. 1 box is unopened. I may display it just for fun. All has been stored well & I'd see no reason not to shoot the rest. Is this stuff worth any $, or do I wanna take it on my next trip to the field?