1965 Roosevelt dime mint error?

[Bob P]

Hi,
I have two theories about how this coin might have been made. One of them is that the planchet used may not be a standard US dime planchet. In other words, the dime may have been struck on a foreign planchet (which may explain the disparity on the weight. Clad type dimes of 1965 are supposed to weigh 2.27 grams)
The other theory is that the raised rims were caused by a heavy strike, and the rims 'rolled over' as time went on and it wore a bit. You mentioned that the edges seemed intact, but your jewelry theory may have some merit. Me personally though, I can't see why anyone would want to make a charm out of a 1965 dime...but weirder things have happened!
My gut tells me that it's man-made though, and not a mint error.

Bob P

[jtwax]

Your dime was used in a token ring/charm of some kind, causing the edges to smash in as such. I have seen several examples like this.

[GarryN]

It seems to be a smaller planchet than the dime below it.

[Robert]

I've seen a Walking Liberty Half sort of like that once. The owner said he tapped the rim of the coin over and over again using the bowl of a spoon. It took many hours but the end result was similar.

Silver is more malleable than copper-nickel, so that may not be what happened with your coin.

[coppercoins]

robert has it right. this technique is known as spooning because many times a spoon was used to tap the edges to make the coin smaller. i am 99.5% sure of this as its cause. i am 100% sure it's not a mint error.