Claudius II. AE half-follis. 1.36g; 16mm. Posthumous issue. 
318 AD. Trier. 

DIVO CLAVDIO OPT IMP, laureate and veiled bust right

REQVIES OPT dot MER, emperor seated left, holding 
short sceptre. 

Mintmark STR. 

RIC VII Trier 207. Extremely rare (R4).

With permission of Roma Numismatics, Feb, 2010