1947 Sc 999 BL6 Soviet Stamps on Contour Map Scott 1080a

1947. Soviet Stamps on Contour Map.
Catalogs: Scott 1080a, Standard Collection 999 BL6, Michel BL6.
Issued on: 1947.
Format: Souvenir Sheet.
Perforation: Imperforate.
Printing: Photogravure.
Face value: 4*15 Russian kopek.