Watch List notes:

Half Sovereign 1821 Marsh 403 the obverse with some hairlines and some light rub to the portrait, and a scratch before BRITANNIAR, the edge slightly flattened at 11 o'clock and 1 o'clock EF/EF the fields with a prooflike quality, this Pistrucci designed reverse a one-year type which was quickly withdrawn due to it's similarity to the Sixpence reverse. An excessively rare date justifiably rated at R5 by Marsh

Estimate: 2500-3000 GBP