Buwayhids (Buyids). Baha' al-Dawla Abu Nasr Firuz Kharshah. AH 379-403 / AD 989-1012. AV Dinar (22.2mm, 5.13 g, 7h). 'Uman mint. Dated AH 391 (AD 1000/1). Treadwell Um391G; Darley-Doran -. Minor marks. Good Fine. Excessively rare, only a single specimen recorded by Treadwell.