Watch List notes:

Seleukid Empire, Seleukos I Nikator Æ 20mm. Uncertain mint 19 (perhaps Baktra?), circa 290/86-281 BC. Head of Dioskouros to right, wearing wreathed pilos; monogram behind / Forepart of horned horse to right; [ΒΑΣΙΛΕΩΣ ΣΕΛΕΥΚΟΥ] behind, anchor to upper left, monogram to right. SC 269.2; HGC 9, 87. 6.87g, 20mm, 6h.

Extremely Fine; mineral adhesions to rev., but exceptional for the type.