Obverse 1

There is a triangular die chip below the hand, on the left side of the pole.

Die chip below the hand on left side of pole

Horizontal raised die polish marks, some heavy, can be seen under LIBERTY on the shield.

Die polish lines

Two raised lumps appear in the void next to the lower right side the shield.

Two lumps right of shield

Reverse PA

A die break is seen inside the eagle's beak.

Die break inside eagle's beak

The mintmark shows evidence of re-punching or is otherwise partially filled.

Partially filled mintmark, possibly repunched

Some of the eagle's feathers were polished off the die on both sides of the chest.

Some feathers polished off the die

Comments: This is the first use of this obverse die. It was also used for the 1875-S Special strike (SP) coins, later used on circulation strikes paired with two different reverse dies. This is the only known use of this reverse die.
Cross-reference: 1875-S JD-PR-1 in United States Proof Coins, by John Dannreuther.

Scarcity: There are at least two known examples of this die pairing. Mid-American Auction's FUN 1987 sale had a second example in addition to the Roy Rauch coin featured here. There may be a third example out there, requiring more study. Rarity rating: R-7+.