The 20th Anniversary of O.P.E.C. (Organization of Petroleum Exporting Countries) 1980
现在展示： 尼日利亚 - （通用）邮票 - 1980 - The 20th Anniversary of O.P.E.C. (Organization of Petroleum Exporting Countries) - 2 邮票.
现在展示： 尼日利亚 - （通用）邮票 - 1980 - The 20th Anniversary of O.P.E.C. (Organization of Petroleum Exporting Countries) - 2 邮票.
![[The 20th Anniversary of O.P.E.C. (Organization of Petroleum Exporting Countries), 类型 KY]](https://www.stampworld.com/media/catalogue/Nigeria/Postage-stamps/KY-s.jpg)
![[The 20th Anniversary of O.P.E.C. (Organization of Petroleum Exporting Countries), 类型 KZ]](https://www.stampworld.com/media/catalogue/Nigeria/Postage-stamps/KZ-s.jpg)
