Shahada spread on both sides, date and mint around. Medinat Jayy mint. 27.5mm, 2.74 grams. Album 215.1
This is a beautiful high quality coin showing original luster. It was reportedly found in Spain in a large hoard of Abbasid coins.
Muhammad ibn Mansur al-Mahdi (ruled 775785), was the third Abbasid Caliph. He succeeded his father, al-Mansur. Al-Mahdi, whose name means "Rightly-guided" or "Redeemer", was proclaimed caliph when his father was on his deathbed.