SASANIAN KINGS. Khosrau I (Anush-ravan), AD. 531-579. Silver Drachm (4.10 gm; 30 mm). AS (Asuristan, Aspanvar, Aspahan) mint, year 22. Obverse; Khosrau bust turning right, reverse, fire altar with attendants, mint: AS (Asuristan, Aspanvar, Aspahan), year 22. Sunrise 970var. Choice EF. Toned.