SASANIAN KINGS. Yazdgird I, 399-420 AD. AR drachm (4.12 gm; 29 mm). AIRAN (Susa) mint. Standard issue, reverse, fire altar with attendants, two crescent and dot flanking the flames, mint "AI" for "AIRAN (Susa) on the right of attendants. Choice Superb. Lightly toned.