Uruguay C424-C425 ad sheets, FDC

Uruguay C424-C425 ad sheets, FDC, $90.00. Michel 1436-1443 Bl.31-32. Anniversaries 1976: Red Cross: Frederick Passy, Henri Dunant; Nobel Prize, 75th Ann; Viking spacecraft; Olympics Montreal-1976; US space mission. World soccer cup Argentina-1978. American Bicentennial.