1968 D/D rpm 1
Fivaz Stanton Numbers:
Old FS-1-027.3  New FS-01-1968D-501

Breen:  Not Listed

Coneca:  RPM 1

Wexler: WRPM-001

Coppercoins:  1968D - 1MM - 001
The 1968 D/D rpm 1 is a strong  
repunched mintmark.  A  secondary D
can be seen to the West of the primary

This variety is listed in CONECA's top
100 RPM's and Wexler's top 100
RPM's.  It is also listed in the
Cherrypicker's Guide.