Fatimids, al-'Aziz billah (AH 365-386 / AD 975-996) Glass Dinar Weight. "The imam al-'Aziz billah Commander of the Faithful" around central medallion with´´Adl´" (correct, approved) in the centre / Blank (numbered tag #131). Album 708; Balog FGJ-38; cf. (for type) Lane-Poole 75. 4.18g, 27mm.
Good Very Fine; light pale yellow colour. Rare.
A fantastic example, with the legend exceptionally well preserved, glass weights are almost never found in this quality. Developed to monitor the accuracy of metal coinage, they were used by the sellers to make sure that the correct weight of metal, and thus the correct value, was being paid in return for the goods being purchased.