The Greek goddess of the moon, Selene is always represented as a bust type, on the tetradrachms of Alexandria. At times, she is crowned by a cresent moon, while other times a larger representation of the cresent appears by her bust. Daughter of the Titans Hyperion and Theia, and Sister of the sun god, Helios.
Curtis (1990) p. 43
Milne 3840 Trebonianus Gallus