Liberia 233

    Issued in 1928, this stamp highlights the African continent on a 10° grid system. The map shows the silhouette of Liberia on the west coast of Africa and six major rivers, the Senegal, Niger, Nile, Congo, Zambezi and the Orange River. The Orange River is the largest river in South Africa.      

     Also shown are Lakes Chad, Victoria, Rudolf and Nyasa, and the island of Socotra off the tip of Cape Guardaful south of Saudi Arabia and the island of Madagascar.
     A careful examination of the map shows the Orange River flowing into the Indian Ocean rather than the Atlantic Ocean.
     The stamp is shown on piece with a German Seapost cancel.