Although described as regular dies trial pieces, these off-metal pieces were actually deliberately struck for sale to collectors. Copper examples J587/P652 as illustrated above were issued as part of complete copper sets. Pollock mentions 2 complete copper sets in the Iowa State Historical Department. A third set was in the famous Garrett collection and was sold by Stacks in 1976. About a half dozen are known. Examples were also struck in nickel J588/P653 with only 2 or 3 known one of which is illustrated below. Judd also lists these as being struck in silver-nickel J589 but we believe these are actually the same as the nickel pieces above. Photos courtesy of Superior.