The 100th Anniversary of the Universal Postal Union (UPU) 1974
现在展示： 保加利亚 - （通用）邮票 - 1974 - The 100th Anniversary of the Universal Postal Union (UPU) - 2 邮票.
现在展示： 保加利亚 - （通用）邮票 - 1974 - The 100th Anniversary of the Universal Postal Union (UPU) - 2 邮票.
![[The 100th Anniversary of the Universal Postal Union (UPU), 类型 CDW]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/CDW-s.jpg)
![[The 100th Anniversary of the Universal Postal Union (UPU), 类型 CDX]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/CDX-s.jpg)
