Watch List notes:

Penny Cynethryth (Wife of Offa) c.757-796, Light Coinage Canterbury Mint, moneyer Eoba, S.909, North 339, Chick 138c (this coin), weight 1.12 grammes, About VF, well-centred with a few very small pitting marks, extremely rare, Cynethryth being the only Anglo-Saxon queen to have her name and portrait on coinage

Estimate: 4000-6000 GBP