Watch List notes:

BRITISH COINS, Kings of Mercia, Offa (757-96), Penny, Light coinage, Canterbury, Eoba, o f f a, crosses between, retrograde r in central panel, rev. e o b a in lobes of Celtic cross, small cross and pellets in centre, 1.15g/10h (Chick 111e, this coin; CEB 18; N 276; S 907). Fine or better but surfaces porous, very rare £500-700