Watch List notes:

SINCONA BRITISH COLLECTION – PART 4. GREAT BRITAIN. CHARLES II. 1660-1685.
Guinea 1677, London. Fourth laureate bust, elephant and castle below, GRATIR instead of GRATIA in obverse legend. 8.30 g. Spink 3345. Bull 257 (R4). Fr. 289. Äusserst selten / Extremely rare. NGC VF35.
(~€ 1'500/USD 1'615)

Tied with one other for finest certified by NGC.