Carausius AE Antoninianus, London mint. AD 287-293.

IMP C ALLECTVS PF AVG, radiate, draped bust right, seen
from the back.
PAX AVG, Pax standing left, holding olive branch and transverse sceptre. 

S-A across fields. 
Mintmark ML. 

RIC V-2, 33; Sear 13825.

With permission of Emporium Hamburg, Nov. 2015.