Although these are described as regular die trial pieces in the standard references, it is more likely that these were deliberately struck for sale to collectors as part of complete off-metal sets. Examples were struck as follows: To see all available images, click here. Copper J1270/P1412 with the following 4 believed to be different: 1) Boosel-RARCOA 4/72 ?, ANR 1/06 as PCGS63BN, Heritage 3/10 as NGC64RED, Heritage 5/12, Heritage 8/12, StacksBowers 8/13 ANA, Heritage 4/14, Heritage 1/19 FUN - PCGS65RED with a spot between stars 2 and 3 and one on Liberty's cap 2) Lohr-1961 Empire Coin FPL, Harte-B/R 3/81, J.E. Drew-B/M 3/96, B/M 1/97 as NGC64RB, Heritage 11/03 lot 11196, ANR 8/04, Goldberg 5/05, Stacks 9/05, Heritage 8/07 ANA as PCGS64RB, StacksBowers 8/19 ANA - NGC64RED with spots on the rim at 12:00 and 2:00 3) B/R 9/75, Paramount Auction 86, Heritage 8/97 ANA as PCGS63RB, Superior 9/98 as NGC64BN, Heritage 11/03 as NGC64BN, Simpson-Heritage 9/20, Heritage 2/21 - PCGS66 with a spot at the U in United touching the dentilation 4) Superior 12/72 ?, B/R 7/81 ANA - green toned proof 60 Aluminum J1271/P1413 with the following 2 confirmed: 1) Boosel-RARCOA 4/72, B/R 2/78, Simpson-Heritage 1/21 FUN - PCGS66 2) B/R 9/75, Paramount Auction 86, J.E. Drew-B/M 3/96, ANR 1/06, Goldberg 5/06, Superior 1/07, Stacks 1/08, B/M 8/09 ANA, Heritage 3/10, StacksBowers 11/11, Legend Auctions 2/14, Legend Auctions 1/17 - PCGS65, illustrated below Photos courtesy of American Numismatic Rarities.