Although described as regular die trial pieces in the standard references, these were actually 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 J1210/P1350 with the following 2 known. 1) Bolender 11/59, Merkin 9/68, Kentucky collection, various greatcollections.com weekly auctions, Heritage 4/20, Heritage 9/20, Heritage 2/21 - NGC66RB, illustrated above, click on the thumbnail to see an enlargement. 2) Heritage 12/88, Stacks 9/92, Lemus-Queller, Heritage 1/09 as NGC65BN, Simpson-Heritage 1/24 FUN - PCGS65BN, illustrated below Aluminum J1211/P1351 with only 2 believed to exist Pollock lists the MTB in 1974, T.R. Walsh coin as one of these Photo courtesy of Heritage.