Austrian Mint · Austria
Large but remarkably thin gold coin (under 1mm) with a 40mm diameter. Official restrikes dated 1915 are widely traded as bullion.
| Mass | 13.96 g |
| Troy Ounces | 0.443 oz |
| Diameter | 39.5 mm |
| Thickness | 0.71 mm |
| Edge | plain |
| Purity | 98.6% Gold, 1.4% Silver |
| Fineness | 0.986 |
| Density | 19 g/cm³ |
| Face Value | 4 Ducat |
| Series | Ducat |
| First Minted | 1872 |
| Ping Frequency | 3,206 Hz |
Use these values to verify an authentic Austrian Gold 4 Ducat. 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.