ISLAMIC, 'Abbasid Caliphate. temp. Al-Rashid, AH 170-193 / AD 786-809. Dirham (Silver, 21 mm, 2.99 g, 8 h), Madinat al-Salam, AH 190 = AH 805/6. SICA III, 1698. Beautiful iridescent toning. Very fine.
From a Swiss collection of Umayyad and Abbasid coins, assembled in the 1970-1980s (with original flip with S. Album's description).