here's a nice one that sold not too long ago
6.5 g, 24.3 x 25.7 mm.
RIC VI 283; Lyon 498. Struck 308 AD.
OBV.: Laureate, draped, and cuirassed Constantine I right, IMP CONSTANTINVS PF AVG.
REV.: Felicitas standing left, holding long caduceus and cornucopia, TEMPORVM FELICITAS, PLG in exergue