Watch List notes:

KINGS of PARTHIA. Uncertain Usurper (Tiridates?). April/May-October/December 27 BC. BI Tetradrachm (29mm, 14.74 g, 12h). Seleukeia on the Tigris mint. Dated Gorpiaios 285 SE (August 27 BC). Diademed bust left / Phraates seated right, receiving wreath from Tyche standing left, holding cornucopia; year below throne; Γ and month in exergue. Callataÿ 139-47 (Phraates IV); Sellwood 55.5 (Tiridates); Sunrise 398 var. (no Γ); cf. Shore 308 (for type). Fine, porosity, cleaning scratches, deposits on reverse.

From the Parthicus Collection.