319 AD., Constantine I., Siscia mint, Billon-Argenteus, RIC 84.

Constantinus I. (Constantine), Siscia mint, officina 1, 319 AD.,
Billon-Argenteus (18-19 mm / 3,16 g),
Obv.: CONSTAN - TINVS AVG , cuirassed bust of Constantine left wearing high crested helmet and holding shield and spear.
Rev.: VICT• LAETAE PRINC PERP / • ASIS • (in exergue) , two Victories holding shield inscribed VOT / PR over altar, altar inscribed I .
RIC VII, 435, 84 (r1) .

misattributed in RIC as a Follis, the metal (billon) and the left facing bust had been the indication of the denomination