ISLAMIC, 'Abbasid Caliphate. temp. Al-Mansur, AH 136-158 / AD 754-775. Dirham (Silver, 25 mm, 2.76 g, 6 h), Madinat al-Salam, AH 154 = AD 770/1. SICA III, 1576. Beautifully toned. Extremely fine.
From a Swiss collection of Umayyad and Abbasid coins, assembled in the 1970-1980s (with original flip with S. Album's description).