Watch List notes:

(g) William IV (1830-1837), Sovereign, 1836, second bust right, rev. crowned shield on mantle, edge milled, 7.97g, 5h (Marsh 20; Schneider II, 638; MCE 493; Spink 3829B), lightly cleaned with some surface marks and a small edge bruise, otherwise lustrous, very fine.
Provenance
From the Quinn Collection
Purchased M Bord (London), 7 June 1991 - £225
, ,
NGC AU-Details ~ Obverse Damage (Certification #5879377-009)
, https://www.ngccoin.com/certlookup/5879377-009/NGCDetails/
Estimate: £400 - £500