Guinea 558-559

     Two stamps with the same design were issued in 1970 by Guinea. The design shows a map of Africa with four countries shaded in color: Mali-green, Mauritania-blue, Senegal-yellow and Guinea-red. The stamps commemorate the meeting of representatives of the countries bordering on the Senegal river, the OERS, Orgaisation Etats Riverains du Senegal.

     The Senegal River is the second longest river in  West Africa. The river basin has a sub-Saharan desert climate which was aggravated in the 1970s by long periods of drought. The map shows the four countries involved in the development of the Senegal River, but it does not show the river itself.