330-333 AD., Constantinus I., Heraclea mint, Æ3, RIC 121.

Constantine I., Heraclea mint, 2nd officina,
Æ3 (16-19 mm / 2.41 g), 330-333 AD.,
Obv.: CONSTANTI - NVS MAX AVG, rosette-didemed, draped and cuirassed bust r.
Rev.: GLOR - IA EXERC - ITVS / • SMHB • (in exergue), two soldiers, helmeted, facing one another, holding reversed spears (in outer hands) and resting inner hands on shields, between them two standards.
RIC VII, p. 558, no. 121 .

in 330 AD. the nummus was reduced in weight and struck at 132 to the pound