Watch List notes:

MACEDON. Thessalonica. Gaius Caligula, with Antonia, 37-41. (Bronze, 21.5 mm, 8.91 g, 6 h). Γ KAIΣAP ΘEΣΣAΛONIKEΩN Laureate head of Caligula to left. Rev. ΑΝΤΩΝΙΑ ΣΕΒΑΣΤΗ Veiled head of Antonia II to left, wearing stephane. RPC I 1574. Brown patina. Light surface roughness, otherwise, very fine.