Carausius, AR denarius, 19.5 mm, London mint. 287-293 AD. 

IMP C CARAVSIVS PF AV, laureate, draped, cuirassed bust right. 
VIRTVS SAEC C, radiate lion walking left, holding thunderbolt in its jaws. 

Mintmark RSR. 
RIC V-2 591 var (rev. legend); Not in Sear; Webb; Cohen; RSC; Akerman etc. Christies 1283, lot 157A.

Courtesy of Christies Sale 1283, Oct. 2001.