SASANIAN KINGS. Khosrau I, 531-579 AD. Silver Drachm (3.90 gm; 29 mm). mint ST (Istakhr), year 31. Khosrau's bust turning right, name in front of face, reverse; fire altar with attendants. Göbl type II/2; Mochiri 1188; Paruck -; Saeedi -; Sunrise 970var. Choice VF. Lightly toned.