Watch List notes:

Seleukid Empire, Antiochos I Soter AR Tetradrachm. Aï Khanoum, circa 280-271 BC. Diademed head to right / Horned and bridled head of horse to right with flamelike forelock; ΒΑΣΙΛΕΩΣ to left, ΑΝΤΙΟΧΟΥ below, Δ monogram in circle in upper right field. SC -; cf. 428 (same obv. die) var. (location of monogram), cf. 429 for location on monogram on reverse; SMAK -; obverse die A1; HGC 9, 132. 15.73g, 27mm, 3h.

Very Fine. A unique and unpublished coin from Aï Khanoum, combining the elderly features of Antiochos with an extremely rare monogram placement.