Watch List notes:

(g) George V (1910-1936), Proof Five-Pounds, 1911, by Mackennal and Pistrucci, bare head left, rev. St George and Dragon, edge milled, 39.99g, 1h (W&R 414; Spink 3994), some light handling marks, otherwise brilliant, good extremely fine.
Provenance
The Apollo Collection
, ,
, NGC PROOF DETAILS ~ Obverse Cleaned (Certification #5880295-002)
, https://www.ngccoin.com/certlookup/5880295-002/NGCDetails/
Estimate: £4,000 - £5,000