The regular dies trial piece. The copper examples were more likely deliberately struck for sale to collectors as part of complete sets. Four copper sets have been accounted for. T. Harrison Garrett had one, a mostly complete double set was apparently stolen from the Iowa State Historical Museum and a 4th set missing the half dollar was offered in Europe in 2022. Just over a half dozen are confirmed as follows: To see all available images, click here. 1) Cox-Stacks 4/62, Smithsonian, donated by Cox in 1963 2) Mitchelson-Connecticut State Library 3) Britton-G Cogan 1/1883, Garrett-JHU, Stacks 3/76 in set, B/M 8/87 ANA, Superior 10/89 as NGC65RB, Superior 10/90 as NGC65RB, Stacks 9/97 as NGC65RB, Simpson-Heritage 4/21 – PCGS68RB, illustrated above courtesy of Superior, click on the thumbnail image to enlarge 4) New Millenium-Heritage 11/03 as PCGS64RB, Heritage 3/04, Heritage 4/04, Heritage 7/04, Heritage 8/04, Heritage 10/04, Heritage 11/04, Heritage 3/05, ANR 1/06, Heritage 1/07 FUN, B/M 11/07 as PCGS65RB, Simpson-Heritage 8/10 ANA, Heritage 5/12, Heritage 10/12 – PCGS66RB 5) Superior 2/00, Fredericks-Heritage 7/03 – ANACS AU55 details, scratched 6,7) Stolen from the Iowa State Historical Museum