
. At first I thought the date was 1960 or 1968. As I looked closer I'm fairly certain it is 1990. If it is the 1990 date then indeed you would be able to peel the entire back off this coin because it is copper plated zinc (this was started in 1982). It appears that this coin has lived a hard life on the streets or at least in someone's pocket, this is all post mint damage. I think it is really cool that you noticed and saved this coin. Keep it up and ask questions, before you know it you will be a true coin collector.