1955 Sc 1759 Drifting ice scientific station “North Pole” Scott 1767 Block of 4

1955. Drifting ice scientific station “North Pole”.
Catalogs: Scott 1767, Standard Collection 1759, Michel 1793, Yt 1770.
Issued on: November 29, 1955.
Perforation: comb 12¼ x 12.
Printing: Lithography.
Size: 42 x 30 mm.
Colors: Multicolor.
Face value: 1 ₽ – Russian ruble.
Quantity: 1,000,000.
Block of 4, MNHOG.