SWEDEN. Adolf Fredrik, 1751-71. Gold Ducat 1763, Stockholm. 3.45 g. Mintage 4,073. Ahlstrom 22. Ducats from Adolf Fredrik are rarely seen on the market. The coin offered here is pleasant and problem-free with some retained lustre around the devices. For the type collector of World gold coins this is a rare opportunity to fill a difficult gap. GVF, with lustre.