The 20th Anniversary of UNESCO World Heritage Convention 1992
现在展示： 纽约联合国总部 - （通用）邮票 - 1992 - The 20th Anniversary of UNESCO World Heritage Convention - 2 邮票.
现在展示： 纽约联合国总部 - （通用）邮票 - 1992 - The 20th Anniversary of UNESCO World Heritage Convention - 2 邮票.
![[The 20th Anniversary of UNESCO World Heritage Convention, 类型 RY]](https://www.stampworld.com/media/catalogue/UN-New-York/Postage-stamps/RY-s.jpg)
![[The 20th Anniversary of UNESCO World Heritage Convention, 类型 RZ]](https://www.stampworld.com/media/catalogue/UN-New-York/Postage-stamps/RZ-s.jpg)
