Watch List notes:

KINGS of PARTHIA. Vologases I. Second reign, circa AD 58-77. AR Diobol (13mm, 1.23 g, 12h). Uncertain mint in Persis. Diademed bust left / Archer (Arsakes I) seated right on throne, holding bow. Sellwood –; Sellwood, New pl. 42, 1; R. Langnas, "An Introduction to Parthian Silver Fractions, The Little Anomalies of Arsacid Coinage," KOINON I (2018), fig. 17 (this coin); Sunrise 426; Shore 381. Iridescent toning, minor porosity, tiny spot of stable green on obverse. VF.

From the Bob (Robert) L. Collection. Ex Parthicus Collection (Classical Numismatic Group Electronic Auction 396, 26 April 2017), lot 380.