Watch List notes:

KINGS of PARTHIA. Vonones I. Circa AD 8-12. BI Tetradrachm (29mm, 13.79 g, 12h). Seleukeia on the Tigris mint. Dated Hyperberetaios 322 SE (September AD 11). Diademed bust left / Sellwood 60.3; Sunrise 406 var. (month); cf. Shore 328. Deposits, minor porosity, graffiti and scratches on obverse. Good Fine. Possibly overstruck on a tetradrachm of Phraatakes and Musa.

From the Bob (Robert) L. Collection. Ex David Sellwood Collection (Baldwin's 90, 26 April 2017), lot 360.