1 Dirham - Tahir I ibn al-Husayn Samarqand

Tahir ibn al-Husayn founded his dynasty on a remarkable act of political theatre: his Friday sermon of 821 in Khurasan pointedly omitted the name of Caliph al-Ma'mun from the khutba — the public prayer that functioned as the primary declaration of political allegiance in the Abbasid world. He died within days, almost certainly poisoned on caliphal orders. This dirham, struck at Samarqand in that same year, predates the provocation and belongs to the earliest stratum of Tahirid coinage, before the dynasty had fully consolidated its semi-autonomous posture in the east.