Abbasid, Harun al-Rashid (AH 170-193 / 786-809 AD), gold Dinar citing Harun as commander of the faithful, Muhammad rasul Allah mimma amira bihi ’abd allah harun amir al-muminin - ... by command of ’Abd Allah, Harun commander of the faithful, no mint (Madinat al-Salam [Baghdad]), AH 171, 3.70g (Album 218.1; Bernardi 58b). Fine, very rare.

Estimate: £ 400 - 500