Roman Empire. Carausius (The Usurper), 286-293 AD. AE Antoninianus. Pax Reverse. London Mint, c.289-90 AD.
 
Obv: IMP CARAVSIVS P F AVG, radiate, draped and cuirassed bust right. Rev: PAX AVG, Pax standing facing, head to left, holding olive branch and sceptre, F-O across fields, ML in exergue.
 
A rich brown tone, a strong portrait.