Carausius, AR denarius, London. AD 286-293. 

IMP CARAVSIVS PF AVG, laureate, draped and cuirassed bust right.
CONCORDIA MLITVM (sic), clasped hands.
Mintmark RSR. 

RIC V-2, London 548 var (rev legend) Roma Numismatics 7, lot 1230

With permission of Roma Numismatics, March 2014.