Watch List notes:

(g) George III (1760-1820), Sovereign, 1817, 'New Coinage', laureate head right, rev. St. George and Dragon, edge milled, 8.01g, 6h (Murdoch III, 100[a]; Douglas-Morris 141; King - [cf. 186]; Marsh 1; MCE 464; Spink 3785), a minute scratch below chin, otherwise a most splendid example of the seminal date of issue for the 'New Sovereign' exhibiting full cartwheel mint lustre, almost as struck.
Provenance
The Apollo Collection
, ,
, NGC UNC-Details ~ Obverse Cleaned (Certification #5880293-010)
, https://www.ngccoin.com/certlookup/5880293-010/NGCDetails/
Estimate: £2,000 - £3,000