Watch List notes:

SELEUKID EMPIRE. Antiochos IV Epiphanes. 175-164 BC. AR Drachm (17mm, 3.84 g, 10h). Uncertain mint in the east. Struck circa 173/2-164 BC. Radiate and diademed head right / Apollo, testing arrow and placing hand on grounded bow, seated left on omphalos; two monograms to outer left. SC 1520 var. (unlisted issue); Mørkholm, Seleucid, unlisted issue and obverse die; HGC 9, 624. Toned, light scratches, slightly off center on reverse. VF. Very rare.

SC 1520a is the only issue with two monograms to the outer left, but although the full monograms are not visible here, it is certain that they are different than those of 1520a.