Watch List notes:

WINDSOR. George VI. 1936-1952. Proof CU-NI Crown. Dated 1951. Frosted with narrow edge lettering. Bull 4025 (R4); ESC 393D; SCBC 4111. Light colorful tone with considerable brilliance to fields contrasting with the frosted design. In NGC encapsulation 6473207-014, graded PF 66 Cameo. Very rare 'VIP Proof'.

From the Gainsborough Collection. Ex Spink Numismatic Circular CX.3 (June 2002), no. MS2835 ('with frosted finish. FDC').