Synthese
This table summarises the main periods of philatelic history of Guam.
| Period | Stamps used |
|---|---|
| ?-1899 | Philippines Filipinas |
| 1899–1901 | United States overprinted « GUAM » |
| 1901–1941 | United States US or United States |
| 1941–1944 | Japanese occupation of the Philippines |
| Since 1944 | United States US or United States |
| Local post | |
| April 1930–April 1931 | Philippines Islands United States of America surcharges Guam Guard Mail |
| July 1930 | Guam Guard Mail |
| April 1931 : local service taken by US Post Office | |
Read more about this topic: Postage Stamps And Postal History Of Guam