Watch List notes:

SYRIA, Kingdom of, Seleucus II Callincus, (246-226 B.C.), silver tetradrachm, (16.38 g), Sardes mint (issued before revolt of Antiochus Hierax), issued 246-242 B.C., obv. diademed head of Seleucus II to right with curly sideburn, rev. Apollo standing to left, holding arrow and leaning on tripod, on right **BASILEWS, to left **SEL EUKOU*, to inner left two monograms AI/**NP*, (cf.S.6897, SC 654.1, Newell WSM -, SNG Israel (Spaer) -, BMC -, Babelon -, Meydancikkale 2853-4, HGC 9, 303g). High relief, bright, some minor surface roughness, otherwise nearly extremely fine/good very fine and very rare.

Ex "Seleucid Hoard" 2003, from Freeman & Sear, December 2003.
Very few are known with these monograms.