The dies are designed with the mintmark as part of the design starting in 1990. So it is impossible to have a over mintmark since then. (OM, over mintmark means having two different mintmarks from different mints. RPMs are mintmarks punched into the die another another same mintmark. These also ended in 1989 because in 1990 the design including the mintmark is on the die, no longer punched into the die)



























