A buddy of mine asked me today about some overstruck or variety coins. Specifically, he asked HOW they were minted as such...the mechanics of what happens (or went wrong so to speak). Well, for the 1922 no D Lincoln cent, I could answer him as I'm aware of what happened included various die pairs, etc. Ditto for the 1955-S double die Lincoln. I also could explain rotated dies. But I strugged with the mechanics of what happened to the 1942/1 Mercury dime....not only did it happen at Philadelphia, but at the Denver mint, too. What happened at those mints to cause this error variety? How did it happen at both Philadelphia AND Denver in one year...then to my knowledge, not to any appreciable extent through 1945 when they stopped minting Mercs! Thanks, all. Houston_Ray
That's perhaps the easiest to explain. They had some dies already made & dated 1941 left over at both mints. So when they started to strike the '42 coins, they repunched the mint mark with a 2 over the 1 and started striking them.
