Coinsandcanada.com

Hello. I have tried to figure out this 1998P USA 10 cents coin. I first thought I was just damaged, but upon futher look I think it must be some type of error. There is obvious damage to Roosevelts face, but rest of it confuses me. It almost has the look of a 12 sided nickel. What do you think? Any suggestions would be appreciated. Thanks.

Post-mint damaga. It almost looks like a shim that someone put under a table or chair leg.

Definitely damage, it is only an error if it happens during the striking of the coin
and there is nothing on that dime that could happen at that time.