Лот 689. SINCONA BRITISH COLLECTION. GREAT BRITAIN. WILLIAM III AND MARY, 1689-1694.  1/2 Guinea 1691, London. Second conjoined busts. Crown without interior. 4.15 g. Spink 3430. Bull 384. Fr. 306. Feine Goldpatina / Nice gold toning. NGC AU50. (~€ 1'150/USD 1'375)