Casa de Moneda de México · Mexico
Mexico's premier gold bullion coin featuring Winged Victory on the obverse and the national coat of arms on the reverse. Unlike most bullion coins, it bears no face value denomination.
| Mass | 31.1035 g |
| Troy Ounces | 1 oz |
| Diameter | 34.5 mm |
| Thickness | 2.5 mm |
| Edge | reeded |
| Purity | 99.9% Gold |
| Fineness | 0.999 |
| Density | 19.3 g/cm³ |
| Face Value | none |
| Series | Libertad |
| First Minted | 1981 |
| Ping Frequency | 2,528 Hz |
Use these values to verify an authentic Gold Libertad 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.