This is a common type, but it is a nice eample. The CMH ligature might be a mark of value -- 100 (sestertii) at 48 to the pound. C is the Latin number for 100 and MH is Greek for 48.
Maximinus II
A.D. 311- 312
22x23mm 6.1g
IMP C GAL VAL MAXIMINVS PF AVG; laureate head right.
GENIO AVGVSTI CMH; Genius standing left, modius on head, naked except for chlamys over left shoulder, holding patera from which liquid flows & cornucopiae over right; E in right field.
In ex. MKV
RIC VI Cyzicus 86a