1901 United States Assay Commission Medal. Copper. 40 mm x 57 mm. By Charles E. Barber and George T. Morgan. JK AC-45. Rarity-5. Specimen-63 BN (PCGS).The copper counterpart to the silver example from these dies offered above, this is a medium brown example with a smooth appearance in hand. Close to near-Gem quality, and worthy of the strongest bids, as such.