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I’ve had this for 30 years search the Internet can’t find anything about the gold other than handy and Harmon precious metal manufactured these for dental purposes talk about one of ones I don’t know where anything else like this is if anybody finds any information I’d be glad to see it. I found a ad one time years ago for back in the 20s, but that phone crashed and I don’t have it anymore and I can’t find it now this is something super unusual for people who won’t one of ones Could be put in a ring or a necklace