Watch List notes:

Bosporus. Aspurgus, with Gaius (Caligula). A.D. 14-38. Æ 12 units (22.2 mm, 8.71 g, 1 h). ΓAIOV KAIΣAPOΣ ΓEPMANIKOY, bare head of Caligula right / Diademed head of Aspurgus right; monogram and IB in fields. Mac Donald 302; RPC 1904; Anokhin 320. aVF.