Watch List notes:

Islamic Coins, Abbasid, Umm Ja'far with heir al-Amin, dirham, Ma'din Bajunays 191h, wt. 2.91gms. (Lowick 907, A. 219.9), very fine, rare
Umm Ja'far was the name that Zubayda used when she was emphasising the kingship of her favourite son, the future Caliph al-Amin. (150 - 200 GBP)