ISLAMIC, Persia (Pre-Seljuq). Buwayhids (Buyids). Baha' al-Dawla Abu Nasr Firuz Kharshah. AH 379-403 / AD 989-1012. AR Dirham (25mm, 3.28 g, 1h). Shiraz mint. Dated AH 398 (AD 1007/8). Treadwell Sh398; Album 1574; ICV 1615. EF, areas of weak strike, double strike on obverse.