Caligula and Agrippina I. Tetradrachm, 15.06g (12h). Antiochia ad Orontem, Year 3=38/39 AD. Obv: ΓAIOY KAIΣAPO[Σ ΣEBA] ΓEPMA Laureate head of Caligula right. Rx: ᾺΓΠΙΠΠΕΙΝΗΣ - ΑΝΤΙΟ.ΜΗΤΠΟ. Draped bust of Agrippina I right, date Γ / ET before neck, pellet behind. Prieur 66. RPC 4168. Very rare: McAlee's sample of six specimens came from only two obverse dies (p. 126).