Watch List notes:

BRITISH COINS, George IV (1820-1830), Gold Sovereign, 1821, first laureate head left, B.P. below, legend around, GEORGIUS IIII D: G: BRITANNIAR: REX F: D:, rev die axis off-centre, St George slaying dragon right with sword, date in exergue, B.P. to upper right (Bentley 4; Marsh 5; MCE 471; S 3800). In PCGS holder graded AU55, some surface marks.
Calendar year mintage 9,405,114

Estimate: £600-800