Carausius, AR denarius, London mint, AD 287-293.

IMP CARAVSIVS P F, laureate bust left, wearing imperial mantle, holding eagle-tipped sceptre and globe.
VBERITAS AVG, Ubertas standing right, holding standard and clasping hand of solider, standing left, holding spear.

MintMark: RSR

RIC V Carausius 590.

From Savio, "Monete Romane".