my first week here, i was told to put everything odd aside. so i did with this one. i happened to come across it again today and it is the same size as a nickel. it is only 2.5 g though. is it something? or nothing? ty
1986 cents were made of zinc, so 2.5g is correct. To be honest, it just looks like a dirty coin. Not sure why it would be the size of a nickel. Possibly hammered in between 2 straps of leather to make it bigger.
The coin has been on/in the ground. All of the zinc modern coins wast away, when lost on/in the ground they turn color and melt away. If they are lost at/in the ocean, then the salt makes it worse.