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Comments: This is the only business strike use of Obverse P2. It was previously used to strike proof die marriages OC-P2 and OC-P3. This is the only business strike use of Reverse PB. It was previously used to strike proof die marriage OC-P3. |
Obverse P2 The photo below shows the Obverse P2 attribution grid. This obverse is designated as P2 since it was first used to strike proofs.   1840 Obverse P2 attribution grid
Obverse P2 was used to strike both proof and business strike issues, our die marriages OC-P2, OC-P3, and OC-3. OC-3 and OC-P3,
which share the same reverse, are both found with a counterclockwise die rotation of about 10 degrees, indicating they were
probably struck at the same time.
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Reverse PB Reverse PB is identified by the extension of vertical lines 1-2 and 1-3 into the horizontal shield lines and by the penetration of lines 2-3 and 3-1 into the shield border. These markers are shown in the photo below. As with the corresponding obverse die the reverse is designated as PB since it was first used to strike proofs.  Reverse PB die markers
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| Photo credits:
Obverse P2 and Reverse PB: 1840 NGC AU58, from the Osburn-Cushing reference collection. |