1941 Sc 704 20th Death Anniversary of Zhukovsky Scott 840 Block of 4

1941. 20th Death Anniversary of Zhukovsky.
Catalogs: Scott 840, Standard Collection 704, Michel 803, Yt 833.
Issued on: March 17, 1941.
Perforation: line 12¼.
Printing: Collotype.
Size: 26 x 37 mm.
Colors: Lilac.
Face value: 50 Russian kopek.
Quantity: 2,000,000.
Block of 4, MNHOG.