Watch List notes:

SELEUKID EMPIRE. Seleukos I Nikator. 312-281 BC. AR Tetradrachm (26mm, 16.98 g, 12h). Seleukeia on the Tigris mint II. Struck circa 296/5-281 BC. Laureate head of Zeus right / Athena, brandishing spear, shield on left arm, in quadriga of elephants right; anchor above, IΔB in exergue. SC 130.1 var. (position of controls); ESM 29 var. (same); HGC 9, 18a. VF, toned. Unpublished variety, extremely rare thus.