Watch List notes:

ISLAMIC, Fatimids. al-Mahdi billah, AH 297-322 / AD 910-934. Sudaysi (Silver, 15 mm, 0.49 g, 1 h), struck by the Rassids in the name of the Fatimid caliph al-Mahdi billah. Athar, without date, struck circa AH 298-301 or slightly later. Album 1067.1. Rare. Minor edge chipping, otherwise, very fine.