Watch List notes:

Kings of Parthia, Uncertain Usurper (Tiridates I?) BI Tetradrachm. Seleukeia on the Tigris, dated 27 BC. Diademed bust to left / King seated to left, holding Nike and sceptre; ΒΑΣΙΛΕΩΣ ΒΑΣΙΛΕΩΝ ΑΡΣΑΚΟΥ ΕΥΕΡΓΕΤΟΥ ΔΙΚΑΙΟΥ ΕΠΙΦΑΝΟΥΣ ΦΙΛΕΛΛΗΝΟΣ around, ΕΠΣ (year) under throne, (uncertain month) in exergue. Sellwood 55.6; Callataÿ 126 (Phraates IV); BMC 14 (Phraates IV). 14.91g, 27mm, 12h.

Good Very Fine.

From the inventory of a UK dealer.