MACEDON. Amphipolis. Gaius (Caligula), 37-41. Hemiassarion (Bronze, 15 mm, 3.60 g). AMΦIΠΟΛ[ITΩN] Laureate head of Zeus to right. Rev. Γ [KAI]ΣAP ΓEPMAN Emperor on horseback right, raising right hand in salute. BMC 87. RPC I 1638. Very rare, just two specimens noted in RPC. Very fine.
From a European collection, formed before 2005.