The regular dies trial piece. Examples of this design were struck from both the 'Small Motto' and 'Large Motto' obverse dies which probably means that they were struck at different times. The illustration below courtesy of PCGS shows the difference in the size of the motto.
Examples of this design are known as follows:
Copper J370. This was delisted by Pollock as being virtually indistinguishable from a regular bronze piece. At least 2 different examples have been slabbed by the grading services.
Copper-nickel J371/P440 with over a dozen known. These are normally on ~92 grain planchets as opposed to the next. Metallurgical analysis is recommended as oddly toned regular proofs could be misattributed as one of these.
One of these is known on a broad 144 grain planchet which has been misdescribed in Judd and Pollock as a J364/P438. It is now listed as J371A and is ex Brenner-1914 ANS, Brand (journal #92500:457), Pine Tree 9/74. We show a distorted image from the Pine Tree sale from the Newman portal. The coin is actually round.
Aluminum J372/P442 with 2 known as follows:
1) Lauder-Doyle Galleries 12/83 - PCGS66
2) J.E. Drew, Simpson-Heritage 8/21 - PCGS65 with spot or hole below O in GOD
Nickel J372A/P441 with 2 known as follows:
1) B/R 1/75, Hughes 10/80, J. E Drew
2) Simpson-Heritage 4/21 - PCGSVG8
Copper J373. This is unlisted in Pollock. At least 2 different examples have been slabbed by the grading services.
Copper-nickel J374/P436. This is unconfirmed.