Carausius, AE Antoninianus. Camulodunum (Colchester) mint.

IMP C CARAVSIVS AVG, radiate, draped bust right.
IOVI CONSER, Emperor facing right, receiving globe from Jupiter, 
facing left.
Mintmark SPC.

Not in RIC or Webb. Closest match is Akerman 64 var (which has the 
rev. legend IOVI CONS), unpublished. Extremely rare.

Mark Clinch's collection, Jan. 2011