Carausius, FAKE AV aureus. London mint, 

IMP C CARAVSIVS P F AVG, laureate, cuirassed bust right.
PAX AVG, Pax standing left, holding olive-branch and transverse sceptre. MVLT X in exergue.

FAKE, deliberately "worn" version of RIC 4
Offered for sale in 2006 for 10,000 Euros. Unsold.