it's just damage and it looks like it is possibly a 1965. I believe I can see that the last digit of the date is a 5 and since this is a memorial copper it would have to be either a 1965 or a 1975. The third digit of the date doesn't look like it could be a 7 so it's probably a 1965. Only philadelphia made cents that year and there were no major varieties to make this coin valuable.