Turkish State Mint (Darphane) · Turkey
Quarter gold coin (Çeyrek Altın) widely traded in Turkey as both bullion and traditional gift. Small 22-karat coin at just 1.8g.
| Mass | 1.804 g |
| Troy Ounces | 0.0532 oz |
| Diameter | 14.6 mm |
| Thickness | 0.9 mm |
| Edge | reeded |
| Purity | 91.67% Au, 8.33% Cu |
| Fineness | 0.917 |
| Density | 17.2 g/cm³ |
| Face Value | 25 Kurush |
| Series | Republic Gold |
| First Minted | 1942 |
| Ping Frequency | 11,688 Hz |
Use these values to verify an authentic Turkish 25 Kurush (Çeyrek Altın). 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.