In 1900 the Dominican Republic issued a map stamp in which the border between the Republic and Haiti, which shares the island of Hispaniola, jutted approximately 50 miles into Haitian territory, claiming possession of the Haitian town of Hincha. Haiti protested and the Dominican Republic invaded. Both countries agreed on a border in 1929.

     The airmail stamps issued by the Dominican Republic in 1930 show the  border agreed to in 1929.