This British Protectorate is in the center of the Indian Ocean. Postage meters are used at a refueling station leased by the United States Navy on the island of Diego Garcia. The stamps are United States types with town mark containing “DIEGO GARCIA”.
Until 1965 Diego Garcia was a dependency of Mauritius, and a commercial meter was used during that period. It is Mauritius Type A3a, M# SD002 with town mark “DIEGO-GARCIA”.