Galerius, 305 - 311 AD
Æ Follis, Serdica Mint, 27mm, 9.7 grams
Obverse:  IMP C GAL VAL MAXIMIANVS PF AVG, Laureate head right.
Reverse:  GENIO POPVLI ROMANI, Genius standing left with chlamys over shoulder and holding patera and cornucopia.  D in field, S • M • S • D • in exergue.

Reference:
RIC12b

Maximiamus, 286 - 305 AD
Æ Follis, Thessalonika Mint, 29mm, 9.9 grams
Obverse:  IMP C MA MAXIMIANVS PF AVG, Laureate head right.
Reverse:  GENIO POPVLI ROMANI, Genius standing left with chlamys over shoulder and holding patera and cornucopia.  TSB in exergue.

Reference:
RIC19b

Maximiamus, 286 - 305 AD
Æ Follis, Heraclea Mint, 28mm, 10.1 grams
Obverse:  IMP C MA MAXIMIANVS PF AVG, Laureate head right.
Reverse:  GENIO POPVLI ROMANI, Genius standing left with chlamys over shoulder and holding patera and cornucopia.  HTA in exergue.

Reference:
not recorded by RIC, am I reading the mintmark wrong?

Maximiamus, 286 - 305 AD
Æ Follis, Cyzicus Mint, 28mm, 10.4 grams
Obverse:  IMP C MA MAXIMIANVS PF AVG, Laureate head right.
Reverse:  GENIO POPVLI ROMANI, Genius standing left with chlamys over shoulder and holding patera and cornucopia.  K E in exergue.

Reference:
RIC12b

Maximinus II, 309 - 313 AD
Æ27, Ostia Mint, 21mm, 3.7 grams
Obverse:  IMP MAXIMINVS PF AVG, Laureate bust right.
Reverse:  GENIO POP ROM, Genius standing left holding chlamys and holding patera, MOSTT in exergue.

Reference:
RIC75a

Provenance:
ex M & R Coins, about 1985, $8