To celebrate medieval Italian history, Delta creates a new limited edition collection called Republics of the Sea. Four Italian City-States – Amalfi, Pisa, Genoa, and Venice are referred to in history as the four Maritime Italian Republics. Each cap is adorned with a central ring engraved with the gonfalon of the four Republics in enamel. The Special Limited edition version has a sterling silver sleeve engraved with the four monuments symbolic of the four cities. The Limited edition version is constructed from a solid bar of Mediterranean blue resin. Only 1,099 fountain pens both editions and 1,099 rollers in the Limited edition are available worldwide. The Republics of the Sea fountain pens have solid 18kt gold nibs and fill via cartridge, converter or eyedropper.