Carausius, AE antoninianus. 291 AD, Camulodunum. 4.90 g. 

IMP C CARAVSIVS PF AVG, radiate, draped bust right.
PAX AVG, Pax standing left, holding branch and
vertical sceptre.
S-P across fields, no mintmark. 

RIC VI 475. 

With permission of Helios Auction 5, June 2010, lot 434
Added in Aug. 2011.