I have recently been investigating some of the problems connected with prince Caius Caesar's eastern command (1 BC-AD 4), which was spent mainly in Syria but included campaigns into Armenia and Arabia, as well as a famous meeting with the Arsakid King Fradatak at the Euphrates.
Looking through the various lists of Roman commanders (legati Caesaris pro pr.) of Syria around this time, it appears that two of these commands are attested by dated coinage struck at Antioch.
Ronald Syme mentions that Q.Metellus Creticus Silanus' command is dated as early as AD 12 by coinage (Roman Revolution p.437 n.7), and that the command of L.Volusius Saturninus (cos.suf.12 BC) is documented only by coins from Antioch dated to AD 4-5 (Augustan Aristocracy pp.101, 338).
Presumably these Common Era dates are known from ancient era dates on these coins (Seleukid or a provincial era), though Syme does not say so.
I would be interested in hearing from anyone on these lists familiar with these coins (are they in Sear's recent book on the provincial coinage ?), and learning whether any more have recently come to light from Antioch (dated or not) which record the names of Roman commanders.
Also whether any coinage was struck in prince Caius' name in Syria.
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