Carausius, AE antoninianus, unofficial mint. 286-293 AD. 25mm, 3.79 gr.

IMP C CARAVSIVS P F AVG, radiate, draped, cuirassed bust right.
IOVI CONS AVG, Jupiter standing left, holding 
thunderbolt and trident; SC in left field.

UKDFD 39383
Not in RIC with this reverse, but an official issue, 
known to Sam Moorhead of the BM, and this coin will be included in his new corpus of Carausius coins.

Found in Lincolnshire, GB, contributed by the finder, Karl T., Oct. 2012