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US Mint · United States
American Gold Buffalo 1/4 oz
0.25 troy oz — 99.99% Goldgolddiscontinued
Quarter-ounce Gold Buffalo produced only in 2008. One of the rarest modern US bullion coins due to its single year of production.
Physical Specifications
| Mass | 7.7759 g |
| Troy Ounces | 0.25 oz |
| Diameter | 22 mm |
| Thickness | 1.83 mm |
| Edge | reeded |
| Purity | 99.99% Gold |
| Fineness | 0.9999 |
| Density | 19.3 g/cm³ |
| Face Value | 10 USD |
| Series | American Buffalo |
| First Minted | 2008 |
Authentication Reference
Use these values to verify an authentic American Gold Buffalo 1/4 oz. All tests can be performed with a digital scale, callipers, and the EON ping tester.
Weight
7.7759grams
Use a 0.001 g digital scale. Calibrate first with a known object (a €2 coin = 8.50g).
Dimensions
Diameter22mm
Thickness1.83mm
Use plastic callipers (not steel — avoid scratching). Or use the camera tool with a bank card as reference (ISO 7810: 85.60mm × 53.98mm).