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US Mint · United States
American Platinum Eagle 1 oz
1 troy oz — 99.95% Platinumplatinumcurrent
America's official platinum bullion coin bearing the highest face value of any US coin. The only denomination still in production after fractionals were discontinued in 2008.
Physical Specifications
| Mass | 31.1035 g |
| Troy Ounces | 1 oz |
| Diameter | 32.7 mm |
| Thickness | 2.39 mm |
| Edge | reeded |
| Purity | 99.95% Platinum |
| Fineness | 0.9995 |
| Density | 21.45 g/cm³ |
| Face Value | 100 USD |
| Series | American Eagle |
| First Minted | 1997 |
Authentication Reference
Use these values to verify an authentic American Platinum Eagle 1 oz. All tests can be performed with a digital scale, callipers, and the EON ping tester.
Weight
31.1035grams
Use a 0.001 g digital scale. Calibrate first with a known object (a €2 coin = 8.50g).
Dimensions
Diameter32.7mm
Thickness2.39mm
Use plastic callipers (not steel — avoid scratching). Or use the camera tool with a bank card as reference (ISO 7810: 85.60mm × 53.98mm).