Gordian III, AR antoninianus, AD 238-239. Antioch. 23 mm, 4.56 g.

IMP CAES M AN GORDIANVS AVG, radiate, draped and cuirassed bust right.
PON M TRIP CON P P, Serapis standing left, modius on head, holding transverse sceptre and raising right hand. 

Bland 32; Izmir 14441.
Extremely rare.
With permission of Lucernae Ancient Coins on vcoins, Item 2022-11245.