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.
The value of the louis d'or, issued from the reform of 1640/41 to 1793, fluctuated (for most of the time) between 10 and 30 livres. Foreign traders accepted the coin at divers rates following their own changing perspectives on the value of gold and the quality of the coin. See Newton's Assessment of
© Matthias Böhne / Olaf Simons, 2004