'Abbasid Caliphate. temp. Al-Ma'mun, AH 193-218 / AD 809-833. Dirham (Silver, 25 mm, 3.00 g, 5 h), al-Muhammadiyya, AH 200 = AD 815/6. ‘lā ilāha illā / Allāh waḥdahū / lā sharīka lahū’ (‘There is no deity but Allah, the One, there is no partner to Him’ in Arabic); in the margin, ‘bism Allāh ḍuriba hādhā al-dirham bi al-Muḥammadiyya sana miʾatayn’ (‘In the name of Allah. This dirham was struck in al-Muhammadiyya in the year 200’ in Arabic). Rev. Citing vizier Dhu’l-Riyasatayn, ‘li-llāh / Muḥammad / rasūl / Allāh / Dhu’l-Riyāsatayn’ (‘For Allah. Muhammad is the messenger of Allah. Dhu’l-Riyasatayn’ in Arabic); in the margin, ‘Muḥammad rasūl Allāh arsalahū bi al-hudā wa dīn al-ḥaqq liyuẓhirahū ʿalā al-dīn kullih wa law kariha al-mushrikūn’ (‘Muhammad is the messenger of Allah. He sent him with guidance and the religion of truth, so that He may make it overcome all religions, even though the unbelievers may dislike it’ in Arabic). Album 223.4. Beautifully toned. Minor doubling on the reverse, otherwise, nearly extremely fine.