1971 Sc 3936 50th Anniversary of Revolution in Mongolia Scott 3857

1971. 50th Anniversary of Revolution in Mongolia.
Condition: MNHOG.
Catalog numbers: Scott 3857, Standard Collection 3936, Michel 3887, Yvert 3725.
Issued on: June 16, 1971.
Perforation: comb 12¼ x 11¾.
Printing: Offset lithography.
Size: 52 x 37 mm.
Color: Multicolor.
Face value: 6 Russian kopek.
Quantity: 4,200,000.