Although these are described as regular die trial pieces in the standard references, it is more likely that the off-metal 'trials' of this year 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 J1359/P1504 with 2 believed to exist although we can only trace the following one 1) B/R 5/76, B/R 5/77, Heritage 12/88, Queller-Heritage 1/09 FUN as NGC64BN, Simpson-Heritage 1/21 FUN, Heritage 6/21, Heritage 12/21 - PCGS64BN, illustrated above, click on the thumbnail image to enlarge Aluminum J1360/P1505 with the following 2 believed to exist. 1) Paramount 1966 Rare Coin List #3, Paramount 2/20, Paramount 5/70, Paramount 5/71, Paramount 6/71, B/R 2/78, Early American History Auctions 2/05, southern collection as NGC67, Simpson-Heritage 4/21 - PCGS67 2) B/R RCR #21-29 (1974-7) in set, B/R 4/79, Heritage 1/09 FUN, Heritage 4/10 - PCGS66 Photo courtesy of Heritage.