Copying follis of Constans II. Bust of Constans facing, traces of Greek letters // M (for "40 nummi"), dashes around, mintmark below. 19mm, 4.82 grams. Dimashq mint, minted c.635-670. Walker-15.

From an old US collection, with the original collection ticket.

These coins are the earliest coins of the first Islamic Caliphate - after conquering the Byzantine Middle East, they issued coins in the corrupted style of Byzantine folli (especially of Constans II). These circulates for about a few decades, until the end of the 7th century.