US Mint · United States
Iconic American silver dollar minted 1878-1904 and 1921. One of the most collected US coins.
| Mass | 26.73 g |
| Troy Ounces | 0.7734 oz |
| Diameter | 38.1 mm |
| Thickness | 2.4 mm |
| Edge | reeded |
| Purity | 90% Ag, 10% Cu |
| Fineness | 0.9 |
| Density | 10.3 g/cm³ |
| Face Value | 1 USD |
| Series | Morgan Dollar |
| First Minted | 1878 |
| Ping Frequency | 4,410 Hz |
Use these values to verify an authentic Morgan Silver Dollar. 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.