Watch List notes:

Gaius (Caligula), with Agrippina Senior, 37-41. Tetradrachm (Silver, 26 mm, 15.19 g, 12 h), Antioch, year 1 = 37. ΓAIOY KAIΣAPOΣ ΣEBA • ΓEPMA • Laureate head of Caligula to right. Rev. [AΓPIΠΠEIN]HΣ ANTIO • MHTPO• / ET A Draped bust of Agrippina Senior to right; in field to right, A above ET. McAlee 222. Prieur 63a. RPC 4164. Rare and in unusually good condition for the series. Struck from slightly worn dies, and with some deposits and die breaks, otherwise, good very fine.