| Diameter |
| 1717 – 1718: 25mm 1719 – 1724: 27mm 1729 – 1775: 30mm 1799: 31mm 1806 – 1807: 28.7mm 1825 – 1859: 28mm 1860 – 1967: 25.5mm |
| Weight |
| 1717 – 1754: 10.30g 1770 – 1775: 10.00g 1799: 13.00g 1806 – 1807: 9.22g 1825 – 1859: 8.80g 1860 – 1967: 5.70g |
| Composition |
| 1717 – 1859: copper 1860 – 1967: bronze |