The so-called regular dies trial piece. These are believed to have been deliberately struck for sale to collectors as part of complete off-metal sets as opposed to being true die trials.
Examples were struck as follows:
Copper J1117/P1253 with fewer than a half dozen known including the illustrated example above. Photo courtesy of Tangible Asset Galleries.
Aluminum J1118/P1254 with only 2 or 3 believed to exist.
Nickel J1119/P1255 with only the illustrated piece below known. It is ex Woodin-1914 ANS, Newcomer, Boyd, Lohr, Cox, 66 ANA, Coronet Coin FPL, Merkin 2/71, Crouch-Superior 6/77, Hughes 2/78, Heritage 1/04.
Photo courtesy of Heritage.