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.
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.
© Matthias Böhne / Olaf Simons, 2004