Watch List notes:

SPAIN, Carthago Nova. Gaius (Caligula), with Caesonia. AD 37-41. Æ As (27mm, 8.26 g, 6h). Cn. Atellius Flaccus and Cn. Pompeius Flaccus, duoviri. Laureate head of Caligula right / Draped bust of Caesonia, as Salus, right. ACIP 3155; RPC I 185. Fine, brown surfaces, porous.

Ex Archer M. Huntington Collection (HSA 1001.1.21146).