Watch List notes:

SASANIAN KINGS. Ardaxšīr (Ardashir) I. As King of Persis, AD 205/6-223/4. AR Obol (12mm, 0.57 g, 9h). Mint A ("Stakhr"). Phase 1, circa AD 205/6-223/4. Facing head, wearing diadem and Parthian-style tiara with pellet-in-crescent / Head of Papak left, wearing diadem and Parthian-style tiara with pellet-in-crescent. SNS type I(1)/1(1); K&M 6/4; Sunrise 694 (this coin). Minor edge splits, double strike on reveres. VF. Very rare denomination.

Ex Sunrise Collection (New York Sale XXXVII, 5 January 2016), lot 345.