Here's a rarer mintmark that was struck shortly before the first civil war with Constantine
Licinius I
A.D. 315- 316
20x21mm 3.0g
IMP C VAL LICIN LICINIVS P F AVG; laureate head right.
IOVI CONSERVATORI AVGG; Jupiter standing l., chlamys across l. shoulder, leaning on sceptre and holding Victory on globe in r. hand; eagle with wreath to l. on ground.
in ex. HTA
RIC VII Heraclea 12