Watch List notes:

(x) PCGS PR65 CAMEO | George VI (1936-1952), Coronation Specimen Proof Crown, 1937, bare head left, rev. crowned shields with supporters, milled edge, 12h (Bull 4021; ESC 393; Spink 4097), some peripheral toning to legends between 10 and 2 o'clock, otherwise brilliant uncirculated, in PCGS holder, justifiably graded PR65 CAMEO (Cert. #38316198).
https://www.pcgs.com/cert/38316198
Estimate: £200 - £300