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Royal Mint · United Kingdom
Gold Quintuple Sovereign
1.1771 troy oz — 91.67% Gold, 8.33% Coppergoldcurrent
Five-pound gold coin containing 36.61g of fine gold (over 1 troy oz). Largest coin in the sovereign family, struck in 22-carat gold.
Physical Specifications
| Mass | 39.94 g |
| Troy Ounces | 1.1771 oz |
| Diameter | 36.02 mm |
| Thickness | 3 mm |
| Edge | reeded |
| Purity | 91.67% Gold, 8.33% Copper |
| Fineness | 0.9167 |
| Density | 17.5 g/cm³ |
| Face Value | 5 GBP |
| Series | Sovereign |
| First Minted | 1820 |
Authentication Reference
Use these values to verify an authentic Gold Quintuple Sovereign. All tests can be performed with a digital scale, callipers, and the EON ping tester.
Weight
39.94grams
Use a 0.001 g digital scale. Calibrate first with a known object (a €2 coin = 8.50g).
Dimensions
Diameter36.02mm
Thickness3mm
Use plastic callipers (not steel — avoid scratching). Or use the camera tool with a bank card as reference (ISO 7810: 85.60mm × 53.98mm).