Nice commemorative follis minted by Constantine I the Great.
Roman Imperial
Constantine I the Great (307–337), Follis 334-335, Siscia mint
Obverse: helmeted and cuirassed bust of Roma left
VRBS ROMA
Reverse: She-wolf, standing left, suckling twins, above two stars, •ΓSIS• in exergue
Diameter 18 mm, weight 2.41 g