Marius, Billon Antoninianus, Cologne, 268 AD. 

IMP C MARIVS P F AVG, radiate, draped, cuirassed bust right.
SAEC FELICITAS, Felicitas standing left, holding caduceus
and cornucopiae. 

RIC 10; AGK 4b; Elmer, 634. 

Rare. 

With permission of Jean Elsen & ses Fils S.A, Dec. 2008