1957 Sc 1881 50th Death Anniversary of D.I.Mendeleev Scott 1906

1957. 50th Death Anniversary of D.I.Mendeleev.
Catalog numbers: Scott 1906, Standard Collection 1881, Michel 1915, Yvert 1891.
Issued on: February 6, 1957.
Perforation: comb 12 x 12½.
Printing: Offset lithography.
Size: 30 x 42 mm.
Color: Multicolor.
Face value: 40 Russian kopek.
Quantity: 2,000,000.