ZANGIDS OF AL-MAWSIL: Ghazi II, 1169-1180, AE dirham (10.23g), al-Jaz[ira], AH575, A-1861.2, SS-61, helmeted head left, without overlord, overstruck on undetermined earlier type (with the name muhammad clearly visible), EF. The engraver inadvertently left off the last 3 letters of the mint name.
Estimate: 200-250 USD