Watch List notes:

FATIMID: al-Mustansir, 1036-1094, glass weight/jeton (8.53g), A-724, FGJ-298, amir / al-mu'minin in the center, caliph's name around, uniface; green/brown, translucent; very rare weight, probably for two gold dinars, VF, RRR. Of the 80+ examples of this type listed by Balog, only 1 piece was this heavy.

Estimate: 200-300 USD