ISLAMIC, Ayyubids. Egypt. al-Nasir I Salah al-Din Yusuf (Saladin), AH 564-589 / AD 1169-1193. Dirham (Silver, 22 mm, 2.80 g), citing al-Nasir I Salah al-Din Yusuf and the Abbasid caliph al-Nasir li-Din Allah, Hamah, AH 75 (for AH 575) = AD 1180. A-T788.1. Very rare and with an interesting error in the date. Some areas of weakness and with two minor edge cracks, otherwise, good very fine.
From the collection of Dr. D. Löer, ex Album 32, 13 September 2018, 388.
The fact that the '500' in the date is missing indicates that the artist run out of space while crafting the die.