SINCONA BRITISH COLLECTION – PART 2. GREAT BRITAIN. GEORGE III, 1760-1820.
1/2 Guinea 1801, London. Sixth laureate head. With a central private countermark of Napoleon Bonaparte's head. 4.18 g. Spink 3736. Bull 845. Fr. 363. Sehr selten / Very rare. NGC UNC Details.
(~€ 970/USD 1'075)
From auction UBS 55, Zürich, September 2002, lot 3570.