Kafur

A 10th-century Coin

Obverse, in field: “no god but God, unique, He has no associate,” the letter kaf; Inner margin: “in the name of God this dinar was struck in Filastin the year five and fifty and three hundred”; outer margin:  “the command is God’s, past and future, and on that day the faithful will rejoice in the victory granted by God” (Q30:4). Reverse, in field: “for God Muhammad is the messenger of God, may God bless him and his family, al-Muti‘ lillah”; in margin: “Muhammad is the messenger of God who sent him with guidance and the religion of truth that he might make it supreme over all other religions, even though the polytheists may detest it” (Q9:33)

A 14th-15th-century Description

This passage is from Maqrizi, one of the most famous historians of Egypt, who wrote his history in Arabic at the end of the 14th or start of the 15th century.

Source, pp. 43-6.