Not error. Never thought of garbage disposal. I'm going to make one tonight! On second thought not garbage disposal either as no cuts across surface.
Here's why I thought it could possibly be caused in the minting process......hey, I'm just sayin.....
Thanks! I gave up on the idea when I realized that was not what happened to the dime. Just thinking about it you are correct - "JAM CITY!" BTW, the last time the apartment maintenance man serviced my disposal he threw a medium size, round, quartz beach rock into it "to sharpen the blades"