Saint Martin/Sint Maarten
Saint Martin (French: Saint-Martin; Dutch: Sint Maarten) is an island in the northeast Caribbean, approximately 300 km east of Puerto Rico. The 87-square-kilometre island is divided between France and the Kingdom of the Netherlands, the two parts are roughly equal in population. It is the smallest inhabited sea island divided between two nations. The division dates to 1648. The southern Dutch part comprises Sint Maarten and is one of four constituent countries that form the Kingdom of the Netherlands. The northern French part is an overseas collectivity of France.
So two DXCC's!