Bust of Constans facing, traces of Greek letters // M (for "40 nummi"), chi-rho above, corrupt Greek mint name below (ΔΑΜ...). 22mm, 2.08 grams. Dimashq mint (?), minted c.635-670. Walker-7ff.

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.