Watch List notes:

Sasanian Kingdom. Shapur II. A.D. 309-379. AR drachm (24 mm, 4.28 g, 3 h). Mint IX ("Kabul"), ca. A.D. 320. Bust of Shapur II right, wearing mural crown with korymbos and inner ribbon / Fire altar with ribbons, no attendants. SNS type Ib1/2a (pl. 8, 104); MK 1225 (Mint I); Göbl type Ia/7; Paruck 255; Saeedi -; NAP 843 (this coin). Lightly toned, well centered and excellent metal. Superb quality for this extremely rare variety lacking the attendants on the reverse. Choice extremely fine. 

Previously sold in Triskeles 23, 282, but buyer never paid.