Cynethryth, Wife of Offa, AR Penny. Moneyer Eoba. 1.1 g. AD 780-784. Canterbury mint. 

EOBA before draped bust right, hair in curls, long cross behind head with a dot in each of the angles.
CYNEdRFd REGINA around double circle containing barred Mercian "m".

Seaby 909; BMC 59; North 339; Blunt 117; Chick 138c (this coin, of four recorded); EMC 2004.0130 (this coin)..

With permission of TimeLine Auctions 
(www.timelineauctions.com), November. 2019