Carausius, AE antoninianus. London mint. 

IMP CARAVSIVS PF AVG, radiate, draped bust right
LEG IIII FL, lion walking right, normal mane.
Mintmark ML.

RIC V-2, London 69.
Rated R2.
With permission of TimeLine Auctions (www.timelineauctions.com), July, 2014