Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr usually known simply as by his laqab al-Manṣūr was the second Abbasid caliph, reigning from 754 to 775, succeeding his brother al-Saffah. He founded the 'R
Abbāsid Caliph al-Manṣūr from the genealogy (silsilanāma), "Cream of Histories" (Zübdet-üt Tevarih, 1598)
Khorasan and other territories during the Caliphate in 750s.
Abbasid Silver Dirham of Caliph al-Mansur 754–775
Abū ʿAbd Allāh Muḥammad ibn ʿAbd Allāh al-Manṣūr, better known by his regnal name al-Mahdi, was the third Abbasid Caliph who reigned from 775 to his death in 785. He succeeded his father, al-Mansur.
Al-Mansur
…the way for Baghdad to become a global center of learning and science under the rule of the seventh Abbasid caliph al-Ma'mun. In 764 al-Mansur's son al-Mahdi was made the designated heir to the caliphate, taking precedence over al-Mansur's nephew Isa ibn Musa, who had been named the designated successor when…
Dirham of al-Mahdi, 166 AH, Kirman, silver 2.95 g.
Dirham of al-Mahdi, Medinat al-Salam (Baghdad) mint. Dated AH 162 (AD 778/9)
Dirham of al-Mahdi minted in Bukhara