Watch List notes:

SELEUKID EMPIRE. Antiochos I Soter. 281-261 BC. AR Tetradrachm (16.16 gm; 24 mm). Aï Khanoum mint. Struck circa 280-271 BC. Diademed head right / Horned and bridled head of horse right with horn-like forelock; to right, Δ in circle. SC 430.2c; SMAK A1TH-15–8 var. (A6/P– [unlisted rev. die]; HGC 9, 132. Choice VF. Extremely rare.