Help to ID this vintage silver bar
My internet search gives me nothing for “GRC”. Any ideas?

Collector of Original Early Gold with beginnings in Proof Morgan collecting.
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My internet search gives me nothing for “GRC”. Any ideas?

Comments
@Proofmorgan
https://www.generalrefining.com/
boston
Successful transactions with : MICHAELDIXON, Manorcourtman, Bochiman, bolivarshagnasty, AUandAG, onlyroosies, chumley, Weiss, jdimmick, BAJJERFAN, gene1978, TJM965, Smittys, GRANDAM, JTHawaii, mainejoe, softparade, derryb, Ricko
Bad transactions with : nobody to date
Successful transactions with : MICHAELDIXON, Manorcourtman, Bochiman, bolivarshagnasty, AUandAG, onlyroosies, chumley, Weiss, jdimmick, BAJJERFAN, gene1978, TJM965, Smittys, GRANDAM, JTHawaii, mainejoe, softparade, derryb, Ricko
Bad transactions with : nobody to date
Thank you! That's interesting. Looks like a small shop. I purchased that bar from a local shop about a month ago. It looked unique and vintage so I had to have it. I'd imagine it came from their earlier days (1975-current).
Bingo!