Solved: Abbasid Dirhams In The Name Of His Sons/Heirs Of Harun Al-Rashid

Both are from the reign of Harun but in the name of his sons/ heirs. The inscriptions are standard except for the reverse fields.

The first is al-Muhammadiya, 182, citing the heir al-Amin Muhammad. Album 219.9a. The reverse reads:

Muhammad rassul Allah/
mimma amara bihi al-amir al-Amin/
Muhammad bin amir al-mu'minin

Muhammad is the apostle of Allah/
that ordered by the commander al-Amin/
Muhammad son of the commander of the faithful

The second coin is Madinat Balkh, 189, citing al-Ma'mun 'Abd Allah as secondary heir (e.g. wali wali, after his brother al-Amin). Also cited is 'Ali (b. Isa b. Mahan), governor of Khorasan province. Album 219.11. The reverse reads:

'Ali/
Muhammad rassul Allah/
mimma amara bihi al-amir al-Ma'mun/
'Abd Allah bin amir al-mu'minin wali/
wali 'ahd al-muslimin/
M

'Ali/
Muhammad is the apostle of Allah/
that ordered by the amir al-Ma'mun/
'Abd Allah son of the commander of the faithful, guardian/
of the guardian of the Muslims/
M

The "M" is likely the initial of al-Ma'mun. Coins in the name of Harun often have an isolated "H" in the same position.