Watch List notes:

SINCONA BRITISH COLLECTION – PART 4. GREAT BRITAIN. VICTORIA, 1837-1901.
Proof Sovereign 1839, London. First young head, shield reverse, plain edge. Die axis 12h (en medaille). By William Wyon. 7.76 g. Hill 23A (R). Spink 3852. WR 302 (R4). Fr. 387a. Äusserst selten / Extremely rare. Prachtvolle Erhaltung / Magnificent condition. NGC PF64 ULTRA CAMEO.
(~€ 15'000/USD 16'130)