Half of punched copper disc

[IowaRelic]

Found this piece of a copper disc with 2 dimples punched in it and one punched clear through. It’s half missing, and I broke it by trying to straighten it. But I’m wondering if it’s a piece of trade copper or trinket? Maybe it’s not old at all, but I believe it is. It’s a tough one to photo for some reason, but upon further cleaning there may be a mark above the punched hole. Has anyone seen anything like this?

 

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[invent4hir]

What are the dimensions? It is difficult to tell but some holes look bevelled so the screw head would be flush.

 

[Icewing]

Kind of looks like part of an old gasket.

 

[IowaRelic]

If it were complete, it would be about 1.5” in diameter roughly. The holes are evenly spaced but only one is through. They look to be crude as there is a rough raised portion on the back where the punch broke through. It’s funny you mention a gasket, as I’ve been a master diesel tech for almost 15 years. It would have been one very shade tree attempt at a gasket and appears to have been a solid disc. The area where it’s discovered is ancient but also is part of a large yard from a still standing 1930s home. They did have a lot of copper/brass early parts on cars and tractors. Thanks for looking.