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Comments: This is the second and final use of Obverse P1 and the only use of Reverse PB. Reverse PB is transitional. It was subsequently used to issue proof die marriage OC-P3 in 1864. |
Obverse P1 Obverse P1 exhibits no significant die markers, but the date position should be adequate for definitive attribution. The date is a little lower in the field than most. The following photo shows the Obverse P1 attribution grid.   1863 Obverse P1 attribution grid
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Reverse PB shows little in the way of die markers. Some minor extensions of the shield lines are the best we could find. Vertical shield line 1-3 extends to horizontal line 5, whereas Reverse PA shows virtually no extensions of the vertical shield lines into the horizontal lines. Horizontal line #1 crosses both shield borders to the left, but doesn’t extend into the feathers. However, Reverse PA has a similar but stronger extension, so be careful when using this as a die marker.  1863 Reverse PB shield line extension
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| Photo credits:
Obverse P1 and Reverse PB: 1863 PCGS Proof genuine, UNC details, altered surfaces, from the Osburn-Cushing reference collection. |