US Mint · United States
America's flagship gold bullion coin containing 1 troy ounce of gold in a durable 22-karat alloy. Features Augustus Saint-Gaudens' iconic Liberty design.
| Mass | 33.931 g |
| Troy Ounces | 1.0909 oz |
| Diameter | 32.7 mm |
| Thickness | 2.87 mm |
| Edge | reeded |
| Purity | 91.67% Gold, 3% Silver, 5.33% Copper |
| Fineness | 0.9167 |
| Density | 17.8 g/cm³ |
| Face Value | 50 USD |
| Series | American Eagle |
| First Minted | 1986 |
| Ping Frequency | 4,500 Hz |
Use these values to verify an authentic American Gold Eagle 1 oz. All tests can be performed with a digital scale, calipers, and the EON ping tester.
Use a 0.01g digital scale. Calibrate first with a known object (a €2 coin = 8.50g).
Use plastic calipers (not steel — avoid scratching). Or use the camera tool with a bank card as reference (ISO 7810: 85.60mm × 53.98mm).
Balance the coin on your fingertip and tap the edge with a pencil or plastic pen. Use the Ping Tester to analyse the ring.