Watch List notes:

Amlwch, Parys Mines Co, uniface trial of the obverse die of Westwood's pattern Halfpenny, [1790], cowled druid's head within an oaken wreath with 20 acorns,rev. blank, edge rounded, 31.5mm/12.47gm.
(DH 379), good Extremely Fine, proof-like with much original mint lustre, of highest rarity and possibly one of
only two specimens in existence. Superb.

Ex. F S Cokayne Col. acquired Baldwin c.1946, his ticket, purchased £7/10/--; Ex. Spink 192, 24 Jan 2008, lot 219.