Silver drachm, 30.4mm diameter.  Weight 3.72 gram.

Bust of Xusru right, wearing winged helmet, Pahlavi legend in field, all within two concentric circles, crescent and star ornaments on rim.  R. Zoroastrian fire altar with two attendants wearing tall headdresses, star to left, crescent to right. Pahlavi legend in field, all within three concentric circles, crescent and star ornaments on rim.  VF

The information with this coin from the Albert Reeves collection says it was bought on 1 Dec 1982 from I Johnson.