Watch List notes:

SELEUKID EMPIRE. Seleukos I Nikator. 312-281 BC. AR Tetradrachm (26mm, 16.02 g, 6h). Attic standard. Aï Khanoum mint. Second group, circa 286/5-284 BC. Laureate head of Zeus right / Athena, brandishing spear, shield on left arm, in quadriga of elephants right; monogram above. SC 276.2; SMAK S1TA-6–13 var. (unlisted dies[?]); HGC 9, 18e. Toned, some roughness, fields smoothed. Good VF. Very rare, only eight of this issue noted in SMAK.