Watch List notes:

William the Conqueror (1066-87), Penny, 'PAXS' type, Wareham, Godwine, 1.37g, 9h, rev. + GODPINE ON PER (SJA 6, lot 45 same dies; N.848 - Crown 1; BMC VIII; S.1257), slightly double-struck on obverse, otherwise old tone, very fine, very rare.
Provenance
The Isladulcie Collection of Medieval Pennies and Fractions
Purchased Vosper, 25 May 2004
Estimate: £350 - £450