Watch List notes:

SELEUKID EMPIRE. Seleukos I Nikator. 312-281 BC. AR Obol (8mm, 0.39 g, 6h). Indian standard. Aï Khanoum mint. Struck circa 284-280 BC. Laureate head of Zeus right / Athena standing right biga of elephants, brandishing spear and shield; Δ-in-circle above, Π below. SC 283b var. (no Π below); SMAK S1OI.1 var. (unlisted dies, different monogram[?]); HGC 9, 32f. Near VF, some porosity, deposits, struck with worn obverse die. Apparently unique with these control marks (unless the SMAK coin actually has this monogram).