CILICIA. Hierapolis-Castabala. Trebonianus Gallus, 251-253. Hexassarion (Bronze, 29 mm, 24.02 g, 4 h). ΑYΤ ΚΑΙ ΤΡЄΒωΝΙΟϹ ΓΑΛΛΟϹ Radiate, draped and cuirassed bust of Trebonianus Gallus to right, seen from behind. Rev. ΙЄΡΟΠ - ΚΑϹΤΑΒΑΛЄΩΝ Tetrastyle temple with pellet in pediment. RPC IX 1540.2 (this coin). Of the highest rarity, one of just two cited in RPC and the only example with this bust type. Light smoothing, otherwise, very fine.