Watch List notes:

GREAT BRITAIN. George IV, 1820-1830. 2 £ 1826, London. Proof strike. Obv. GEORGIVS IV DEI GRATIA. Bare head left. Rev. BRITANNIARUM - REX FID DEF. Coat of arms. Spink 3779; KM 701; Fr. 373. AU. 15.96 g. NGC PF 66 CAM

Extremely rare in this condition, top grade for this type, the only one in proof 66 at PCGS or NGC.
Certification number: 3353113-005