1 Dirham - Shahriyar b. Rustam Firrim

The Bavand dynasty ruled the mountainous Tapuristan region (roughly modern Mazandaran) as a client kingdom for centuries, outlasting Abbasid suzerainty by adapting politically to successive overlords — Samanids, Buyids, and eventually the Ziyarids. Shahriyar b. Rustam Firrim governed during a period when Buyid dominance over the Iranian plateau was fracturing, giving peripheral dynasties unusual room to assert local coinage rights. Billon issues from this branch of the Bavands are poorly documented in Western collections, and Album's A#1525 attribution itself relies on a thin corpus of specimens.