Æ16 - Domitian ΚΩΙΩΝ

Cos issued coins sporadically under the Principate, and the civic bronze series attributed to Domitian's reign belongs to a period when the island retained enough municipal autonomy to strike in its own name under the Halicarnassus conventus. Domitian's relationship with the eastern provinces was complicated — his reign saw both aggressive taxation and selective benefaction, and local mints often struck civic bronzes as much to assert municipal identity as to meet any practical need for small change.

The Halicarnassus conventus grouping reflects Roman administrative reorganization of Asia, where assize districts determined judicial and, indirectly, monetary jurisdiction.