1951 Sc 1553 Alexey N. Severtsov Scott 1579

1951. Alexey N. Severtsov.
Catalogs: Scott 1579, Standard Collection 1553, Michel 1587.
Height: 33 mm.
Issued on: 1951.
Perforation: line 12½.
Printing: Photogravure.
Raster: square.
Face value: 40 Russian kopek.