A glass weight produced in Egypt between the AH 2nd and 9th / AD 8th and 15th centuries, which would have been used to check the weights of prototype gold, silver, and copper coins. ###>Poids en verre fabriqué en Égypte entre le IIe et le IXe siècle H (VIIIe-XVe siècle J.-C.), utilisé pour contrôler le poids de prototypes de pièces en or, argent et cuivre.