Watch List notes:

ABBASID: al-Mahdi, 775-785, AR dirham (2.90g), Qasr al-Salam, AH168, A-215.1, 2 pellets above reverse field, lovely strike, choice EF, R. Qasr al-Salam was a failed attempt to establish a new central Abbasid administrative center near Baghdad. Its coinage is dated AH167-169.

Estimate: 175-250 USD