保加利亚
现在展示： 保加利亚 - （通用）邮票 (1879 - 2024) - 2 邮票.
1973
Underwater Exploration
24. 一月 窗口管理器: 空缺 筛孔: 12½
![[Underwater Exploration, 类型 BYC]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/BYC-s.jpg)
![[Underwater Exploration, 类型 BYD]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/BYD-s.jpg)
![[Underwater Exploration, 类型 BYE]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/BYE-s.jpg)
![[Underwater Exploration, 类型 BYF]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/BYF-s.jpg)
1973
Underwater Exploration
24. 一月 窗口管理器: 空缺 筛孔: Imperforated
![[Underwater Exploration, 类型 ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/2224-b.jpg)
