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 (2). Ex Silvio Baldassari Collection, Leu Numismatics (Zurich) auction 62, 18 May 1995, lots 310 and 340.