Bronze Nummus of Constantine I, (A.D. 307-337).
Lyons mint, A.D. 320.

Obv: CONS-TANINVS AVG, cuirassed bust right wearing
high-crested helmet.
Rev: VICTORIAE LAET PRINC PERP - 2 Victories, standing, facing each other, holding shield inscribed VOT/PR in two lines over plain altar. 

Mintmark P-left-facing seated captive-right facing seated captive L.

RIC VII Lyons 79.

With permission of Glenn Simonelli of Fel Temp Coins, February, 2011