This coin is a little rough, but the interesting legend is visible- Constantino Inv[ictus]
Constantine I
A.D. 312
23x24mm 5.1gm
IMP C FL VAL CONSTANTINO P F INV AVG, laureate head right.
IOVI CONS-ERVATORI, Jupiter standing facing, head left, chlamys hanging from left shoulder, right holding globe, left leaning on scepter; in left field wreath.
In ex. HTB
RIC VI Heraclea 67