Looks like 1959D-1mm-003 http://www.coppercoins.com/lincoln/diestate.php?date=1959&die_id=1959d1mm003&die_state=mds But there are pages of RPMs for this date, so you can look through the others. If you aren't familiar with this site , it is a goto for varieties. This page gives the other designations if you prefer Wexler or Crawford numbers. Jim
