The 10th Anniversary of Organization of Petroleum Exporting Countries or O.P.E.C. 1971
Rāda: Lībija - Pastmarkas - 1971 - The 10th Anniversary of Organization of Petroleum Exporting Countries or O.P.E.C. - 2 marka.
Rāda: Lībija - Pastmarkas - 1971 - The 10th Anniversary of Organization of Petroleum Exporting Countries or O.P.E.C. - 2 marka.
![[The 10th Anniversary of Organization of Petroleum Exporting Countries or O.P.E.C., veids EK]](https://www.stampworld.com/media/catalogue/Libya/Postage-stamps/EK-s.jpg)
![[The 10th Anniversary of Organization of Petroleum Exporting Countries or O.P.E.C., veids EK1]](https://www.stampworld.com/media/catalogue/Libya/Postage-stamps/EK1-s.jpg)
