Watch List notes:

BRITISH COINS, MILLED GOLD SOVEREIGNS, William IV, Gold Sovereign, 1837, second bare head right, w.w. incuse on truncation, rev crowned quartered shield of arms, with the arms of Hanover as an escutcheon, date below (Bentley 32; Marsh 21; MCE 494; S 3829B). Once cleaned with light surface marks, otherwise bold very fine, a rare date.
Calendar year mintage 1,172,984
Total calendar year mintage of Sovereigns for the reign of William IV = 9,171,655 pieces

William IV died 20 June 1837
The Victorian Young Head Series of Shield Reverse Sovereigns

Estimate: £1500-1800