Watch List notes:

KINGS OF BOSPORUS. Rhescuporis II, with Caracalla, 211/2-226/7. Stater (Electrum, 18 mm, 7.81 g, 12 h), BE 512 = 215/6. BACIΛЄωC ΡHCKOΥΠOΡIΔOC Diademed and draped bust of Rhescuporis II to right. Rev. BIΦ Laureate head of Caracalla to right; before, trident. MacDonald 555/6. Good very fine.