P. Satrienus, AR Denarius, 77 BC.  Head of young Mars right, XXVIII behind.  ROMA above she-wolf walking left, P . SATRIE | NVS in exergue.  3.83g.  Cr 388/1b; BMC 3209-37; Syd 781a; Satriena 1.

Note:  This type refers to the foundation of Rome.  Mars was the father of Remus and Romulus.