Watch List notes:

Abbasid, al-Mahdi (158-169h), dirhams (2), Arminiya 161h, and al-Haruniya 169h, rev., citing Harun and Khuzayma, 2.84, 2.91g (Vardanyan 23, 189), very fine to good very fine; al-Hadi (169-170h), dirham, al-Haruniya 170h, rev., citing Harun, Ibrahim and Jarir, 3.03g (Vardanyan 191), very fine and toned, scarce (3) Ex Silvio Baldassari Collection, Leu Numismatics (Zurich) auction 62, 18 May 1995, lots 310, 340 and 352.
(200-250 GBP)