Watch List notes:

Kings of Mercia, Offa (757-96), Heavy Coinage, London, non-portrait issue, penny, moneyer Wilhun, OFFA, with lozenge-shaped O, rev., cross at each end of bar, 1.15g (Chick 212e; N. 324; CEB 104; S. 907), chipped, very fine
(Estimate: 300 - 500 GBP)