Looks like a normal 1960 D penny to me. Although hard to tell from the pics it does appear to be a small date 1960 d. Better close up pics of both sides would help.
It is plated and it is mounted in a bezel. It was once part of a piece of costume jewelry. You can see where the bezel was damaged on the reverse side down at 6:00 where it was pulled off.
Thank you all for your input! I tried to get better pictures but it was difficult to get the right lighting and angle to properly capture the detail. I’m new to this community, but I have been collecting coins since I was a kid. I’m happy to have received all your responses and looking forward to sharing and learning more on this site!