現在展示： 美國 - （通用）郵票 (1930 - 1939) - 8 郵票.
8. April 窗口管理器: 空缺 篩孔: 11
![[The 300th Anniversary of the Massachusetts Bay Colony, 類型 HN]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HN-s.jpg)
10. April 窗口管理器: 空缺 篩孔: 11
![[The 250th Anniversary of the City of Charleston - South Carolina, 類型 HO]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HO-s.jpg)
4. June 窗口管理器: 空缺 篩孔: 11 x 10½
![[William Howard Taft, 1857-1930, 類型 HQ]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HQ-s.jpg)
![[William Howard Taft, 1857-1930, 類型 HQ1]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HQ1-s.jpg)
9. July 窗口管理器: 空缺 篩孔: 11
![[The 175th Anniversary of the Battle of Braddock's Field, 類型 HR]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HR-s.jpg)
17. September 窗口管理器: 空缺 篩孔: 11
![[The 200th Anniversary of the Birth of General Friedrich Wilhelm von Steuben, 1730-1794, 類型 HS]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HS-s.jpg)
1. December 窗口管理器: 空缺 設計: Line Pair 篩孔: 11 x 10½
![[Warren G. Harding, 1865-1923, 類型 HP]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HP-s.jpg)
![[Warren G. Harding, 1865-1923, 類型 HP1]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/HP1-s.jpg)
