Watch List notes:

Abbasid, al-Mahdi (158-169h), dirhams (3): Qasr al-Salam 167h, Ifriqiya 167h, rev., citing Harun as heir, and al-Basra 167h, 2.94, 2.48, 2.82g (Lowick 1473, 301, 1040), first good very fine, others generally very fine, all scarce (3). Ex Silvio Baldassari Collection, Leu Numismatics (Zurich) auction 62, 18 May 1995, lots 326, 313 and 318.