Thanks for the help everyone. It's greatly appreciated!
It's in a 30mm holder. I'm not sure of the weight
I've never tried to clean it. I was afraid of breaking or damaging it.
I'm not sure. He used to like to search old dump sites so probably found it on one of his expositions. I do have a metal detector I could try in it.
My father found it and saved it...maybe it's is not a coin. We always assumed it was due to the size and shape.
Anyone ever saw a coin like this? Is it worth anything?
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