Watch List notes:

SELEUKID EMPIRE. Seleukos I Nikator. 312-281 BC. AV Stater (17mm, 8.50 g, 6h). In the name and types of Alexander III of Macedon. Contemporary imitation of Babylon I mint issue struck circa 311-300 BC. Head of Athena right, wearing triple-crested Corinthian helmet adorned with a coiled serpent / Nike standing left, holding wreath and stylis; [M]I in left field, monogram in wreath below left wing. For prototype: cf. SC 81.3 corr. (griffin, not sphinx); cf. Price 3749 corr. (same); cf. HGC 9, 3a. Good VF, edge filed, probably ex jewelry. For another example from the same reverse die, see CNG E-Auction 261, lot 135.

The missing M in the left reverse field and the crude monogram in a wreath below Nike's left wing are two stylistic indications that this is a contemporary imitation.