Stillwater Palladium Rounds
The Stillwater Mining Company and Johnson Matthey collaborate to mine and refine the palladium to a 99.95% purity. The Northwest Territorial Mint began minting the Lewis and Clark Corps of Discovery bicentennial commemorative bars and rounds in 2004. Each comes sealed in a plastic card containing the assay certificate number.
| Stillwater
Palladium Rounds .9995 Fine Palladium |
Item | Weight | Diameter | Thickness |
| 1 0z | 1 oz | 38.1 mm | 2.28 mm | |
| 1/2 oz | 1/2 oz | 30 mm | 2.16mm | |
| 1/4 oz | 1/4 oz | 25 mm | 1.40 mm | |
| 1/10 oz | 1/10 oz | 19.7 mm | 1.09 mm |
