Comments:
   This is the only proof usage of Obverse P1 and the only use of Reverse 1840 PA in 1850.
Obverse P1 was later used, in a different die marriage, to strike business strikes.
Reverse 1840 PA was used to strike almost all original proofs from 1840 through 1854.
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Obverse P1
Obverse P1 is the only business strike obverse die. It exhibits notable repunching on the 0, most visible
on the lower left side of the prominent digit. Die lines slant very slightly up to the left from the
denticles below 50. The following photo shows the Obverse P1 attribution grid, with arrows indicating
the other features.
1850 Obverse P1 attribution grid and die markers
Obverse P1 Die States
- Perfect die.
- Die lines below 50 removed by die polishing.
- Die crack through the base of the date.
No later die states have been observed. Die state c is unconfirmed, but reported by other authors.
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Reverse 1840 PA
The reverse die used for the 1850 proof issue is the same die used for almost all original proof strikes from
1840 through 1854. This die exhibits unique features on A3. The following photo shows these die markers,
possibly created from die rust or just die crumbling due to imperfect die metal. These allow easy
identification of the proof die, even on mishandled or lightly circulated examples.
Reverse 1840 PA defects in A3
Reverse 1840 PA Die States
- Perfect die.
No later die states have been observed.
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