Smithsonian National Museum of Natural History Dimetrodon
€440,639.00
| Issuer | United States |
| Year | |
| Type | Souvenir medallions › Elongated coins |
| Value | |
| Currency | |
| Composition | Copper plated zinc |
| Weight | 2.5 g |
| Dimensions | |
| Thickness | |
| Shape and Technique | Oval Roller milled |
| Orientation | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) |