Watch List notes:

(g) PF65+ CAMEO | George VI (1936-52), Proof Two-Pounds, 1937, edge plain, 16.02g, 12h (W&R 437; S.4075), a fine proof with minimal hairlines and striking cameo definition, brilliant uncirculated or very near so, in NGC holder, graded PF65+ CAMEO (Cert. #5878606-016) [The only example certified in this sub-tier / 21 Finer].
https://www.ngccoin.com/certlookup/5878606-016/65/
Estimate: £1,800 - £2,200