Watch List notes:

(g) George IV (1820-30), Sovereign, 1828, bare head left, rev. crowned garnished shield (Marsh 13 [R4]; MCE 479; S.3801), light bagmarks in otherwise residually lustrous fields, good very fine and very rare, in PCGS holder, graded AU55.
The second finest graded by PCGS
Estimate: £15000 - £20000