1990 Stamp Issues The Year 1990's Issues: | Issue Date | Set ID | Issue Name | | March 8, 1990
| R3 | Regular Issue (Third Series): Birds of the Atolls and Reefs |
| March 15, 1990 | C47 |
Traditional Children's Games | | April 6, 1990 | B19 | Penny Black Sesquicentennial 1840-1990 | | April 9, 1990 |
W5 | Invasion of Denmark and Norway, 1940 | |
April 16, 1990 | W6 | Katyn Forest Massacre, 1940 | | April 19, 1990 | R3I | International Stamp
Exhibition, Essen '90. | | May 3, 1990 | C48 | Endangered Wildlife: Sea Turtles | | May 10, 1990 | W7 | Churchill Becomes Prime Minister, 1940 | | May 10, 1990 | W8 | Low Countries Invaded, 1940 | |
June 4, 1990 | W9 | Deliverance at Dunkirk, 1940 |
| June 14, 1990 | W10 | Occupation of
Paris, 1940 | | July 3, 1990 | W11 |
Battle of Mers-el-Kebir, 1940 | | July 18, 1990 | W12 | Burma Road Conflicts 1940-1945 | | September 3, 1990 | W13 | Destroyers for Bases Agreement, 1940 | |
September 15, 1990 | P1 | Battle of Britain, 1940: Official Coin First Day
Cover | | September 15, 1990 | W14 |
Battle of Britain, 1940 | | September 27, 1990 | W15 | Tripartite Pact Signed, 1940 | | September 28, 1990 | C49 | Compact of Free Association: Joint Issue with USA | |
October 3, 1990 | C50 | Germany United |
| October 3, 1990 | P2 | Germany United:
Official Coin First Day Cover | | October 25, 1990 | C51 | Christmas, 1990: Jitkelon Mejal | | November 5, 1990 | W16 | Roosevelt Elected to 3rd Term, 1940 | | November
11, 1990 | W17 | Battle of Taranto, 1940 | | December 15, 1990 | C52 | Traditional Food:
Breadfruit | |