ISLAMIC, 'Abbasid Caliphate. temp. Al-Rashid, AH 170-193 / AD 786-809. Dinar (Gold, 18 mm, 4.17 g, 4 h), citing Ja'far ibn Yahya Barmaki, Misr, AH 178 = AD 794/5. Bernardi 69. SICA III, 1846. Light marks, otherwise, very fine.

From the Edris Shir Mohammad Collection of Islamic gold coins.

Ja'far ibn Yahya Barmaki (767-803) was a Persian vizier of the Abbasid caliph Harun al-Rashid. He was executed in 803, allegedly for having an affair with al-Rashid's sister Abbasa.