Gratian, AE20, Arles.

DN GRATIANVS AVGG AVG, pearl-diademed, draped and 
cuirassed bust right.
GLORIA NO-VI SAECVLI, Emperor standing facing, head 
left, holding labarum in right hand and resting left hand 
on shield.

OF-II across fields.
Mintmark CON.

RIC IX Arles, 15 type xii(b), rated common.

From Dane's collection, Nov. 2010. Sorry it's so crappy but I didn't want to clean it in case it crumbled to bits.