現在展示: 美國 - (通用)郵票 (1950 - 1959) - 9 郵票.
15. January 窗口管理器: 空缺 篩孔: 10½ x 11
![[Pennsylvania Academy of the Fine Arts, 類型 TV]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/TV-s.jpg)
12. February 窗口管理器: 空缺 篩孔: 11 x 10½
![[The 100th Anniversary of the Land Grant Colleges, 類型 TW]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/TW-s.jpg)
23. February 窗口管理器: 空缺 篩孔: 11 x 10½
![[The 50th Anniversary of Rotary International, 類型 TX]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/TX-s.jpg)
21. May 窗口管理器: 空缺 篩孔: 11 x 10½
![[Armed Forces Reserve, 類型 TY]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/TY-s.jpg)
21. June 窗口管理器: 空缺 篩孔: 10½ x 11
![[New Hampshire - The Old Man of the Mountains, 類型 TZ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/TZ-s.jpg)
28. June 窗口管理器: 空缺 篩孔: 11 x 10½
![[The 100th Anniversary of Soo Locks, 類型 UA]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/UA-s.jpg)
28. July 窗口管理器: 空缺 篩孔: 11 x 10½
![[Atoms for Peace, 類型 UB]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/UB-s.jpg)
18. September 窗口管理器: 空缺 篩孔: 11 x 10½
![[The 200th Anniversary of Fort Ticonderoga, 類型 UC]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/UC-s.jpg)
20. December 窗口管理器: 空缺 篩孔: 11 x 10½
![[The 100th Anniversary of Andrew Mellon, 類型 UD]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/UD-s.jpg)