現在展示： 香港 - （通用）郵票 (1862 - 2024) - 4 郵票.
1965
The 100th Anniversary of I.T.U.
17. May 窗口管理器: 5 篩孔: 11 x 11½
![[The 100th Anniversary of I.T.U., 類型 AP]](https://www.stampworld.com/media/catalogue/Hong-Kong/Postage-stamps/AP-s.jpg)
![[The 100th Anniversary of I.T.U., 類型 AQ]](https://www.stampworld.com/media/catalogue/Hong-Kong/Postage-stamps/AQ-s.jpg)
1965
I.C.Y.
25. October 窗口管理器: 5 篩孔: 14½
![[I.C.Y., 類型 AR]](https://www.stampworld.com/media/catalogue/Hong-Kong/Postage-stamps/AR-s.jpg)
![[I.C.Y., 類型 AS]](https://www.stampworld.com/media/catalogue/Hong-Kong/Postage-stamps/AS-s.jpg)
