Nicaragua 730-734, C309-C315, CO45-CO50 sheets of 4, MNH, $100.00. Michel 1010-1021 Bl.D1-D6, D385-D390 sheets, Euros 115.00. UPU-75, 1949. Rowland Hill, Heinrich von Stephan, UPU Monument, Congress medal, UPU Buildings.
All 18 sheets of the stamps of the first picture have same design as the sheet of the third picture.