Good details.
Roman Imperial
Constantine I the Great (306-337), Follis 334-335, Siscia mint
Obverse: rosette-diademed, draped and cuirassed bust right
CONSTANTINVS MAX AVG
Reverse: two soldiers holding spears and shields, two standards between them, •ASIS• in exergue
GLORIA EXERCITVS
Diameter 18 mm, weight 2.58 g