Watch List notes:

ABBASID: al-Mahdi, 775-785, AR dirham (2.72g), Tudgha, AH166, A-215.2, rare mint in the Moroccan silver mining region, VF, RR. After AH173, Tudgha became a relatively common mint for the Idrisids and briefly in 175-176 for the Kharijite ruler Khalaf b. al-Muda'.

Estimate: 150-200 USD