Here's what RPM stands for. Repunched Mintmark. Up until 1990, the mintmarks used to be punched in by hand, so if the placement or position was off, they would have to try again and repunch the Mintmark in its correct position. All mintmarks are now carved into the coin die during the die making process.
Errers and Varietys.
Edited by Errers and Varietys
01/21/2018 5:49 pm