Caracalla, 198-217. AR Antoninianus, 23 mm, 5.29 g, Rome, AD 215. 

ANTONINVS PIVS AVG GERM, radiate, cuirassed bust right.
P M TR P XVIII COS IIII P P, Serapis standing front, head to left, raising his right hand in salute and holding sceptre in his left. 

BMCRE 128; RSC 295; RIC 263d.

With permission of Leu Numismatik AG - Web Auction 21, Lot 4463, July 2022