English Money
| 1 guinea [8.35 / 7.65 g Au] | = | 21 shillings, 6 pence |
| 1 pound / £ | = | 20 shillings |
| 1 crown | = | 5 shillings |
| 1 half-a-crown | = | 2 shillings, 6 pence |
| 1 shilling / s. | = | 12 pence |
| 1 penny / d. | = | 4 farthings |
| 1 farthing |
The guinea gold coin, first issued on 6 Feb. 1663 (1662 Old Style) with the value of 20s reached nearly 30s in 1694 before the rehabilitation of the silver coinage under William III. allowed a new fixing at 21s 6d in 1698. The proclamation of Dec. 1717 fixed it at 21 s.
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More information on British money.
Polskie pieniądze
| 1 złoty | = | 30 groszy |
| 1 grosz | = | 18 denarów |
| 1 denar |
In 1496 the Sejm approved the creation of a national currency. Its value was set at 30 Prague groschen, later converted to Polish grosz. The 30 grosz coin, złoty, became the Polish gulden.