post mint damage. you can see on the obverse there is a ring where the pressure was applied to push out the reverse. Richard
A lot of jewelry has coins in it, that have been domed. I have seen silver and gold coins domed & added to jewelry, usually bracelets. Definitely damaged.
PMD isn't alway junk. Sure, it gets rid of value, but I still collect PMD coins that I find interesting. If nothing else, I have them for a reference of possible PMD's.