Vabalathus - Rex and Dux Romanorum at Palmyra (267-272A.D.) -  AE Antoninianus - 20.87mm, 2.97gr
Obverse - VABALATHVS V C R IM D R
Vabalathus, his laurate, draped and cuirassed bust right
Reverse - IMP C AVRELIANVS AVG
Aurelian, his radiate and cuirassed bust right
H in exergue.

Minted at the 8th officina (H) in Antioch (Antakya, Turkey) in 270-272 A.D.

Reference: 
Webb, P.H., "Roman Imperial Coinage", Volume 5, Part 1 (RIC), p308, nr. 381 (under Aurelian)
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p442, nr. 11718.
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p284, nr. 3292.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Vol. 6, p217, nr. 1
Van Meter, D., "Handbook of Roman Imperial Coins", p271, nr. 1.
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC2),  p583, nr.19 (Ba, O2, R6, T5, M1)

Quality: Very Fine with desert patina