1873 Open 3 S2

Known examples:

1) MS-64RB {PS} PCGS. Bowers & Merena "Swan & Sweet" 3/04:366; Bob Lutzel; EERC (2010)

2) MS-64RB {PS} PCGS . Larry Steve; EERC (2010); J.H.

3) MS-62BN {PS} PCGS. EERC (2010)

4) XF. Bob Lutzel; EERC (2008)