Gaius, with Rhoemetalces III (38-46 AD). AE 30.5 mm. Struck AD 38-41. D/ Laureate head of Gaius (Caligula) left. R/ Gaius seated left on curule chair, presenting diadem with right hand to Rhoemetalces, standing right, cradling spear in left arm and receiving diadem with right hand. RPC I 1722. AE. g. 23.20 mm. 30.50 RR. Rare. Good VF.