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Comments: This is the second and final use of Obverse P1 and the only use of Reverse 1856 PA in 1859. Reverse 1856 PA was first used to strike original proofs in 1856 and 1857. It was later used to strike proof restrikes of 1851, 1852, 1854, and 1858, and regular issue proofs of 1861. |
Obverse P1 The photo below shows 1859 Obverse P1 attribution grid. Obverse P1 exhibits very slight repunching on the 1, visible below the prominent digit. The arrow in the photo below points to this feature.   1859 Obverse P1 attribution grid
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Reverse PA was used for all 1856 proofs. It was used again in 1857, 1858, and 1861, and possibly in 1860. This die exhibits only a few minor markers, lumps on S1 and L. Since most proofs seen are relatively high-grade, these lumps are visible on most examples. The photos below show these features.  Reverse PA lump on S1  Reverse PA lumps on L The lumps on the L are usually the most visible marker.
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| Photo credits:
Obverse P1: 1859 PCGS PR67 Cameo CAC, from the Heritage archives. Reverse 1856 PA: 1856 PCGS PR62, from the Osburn-Cushing reference collection. |