1971 Sc 3942 10th Anniversary of Antarctic Treaty Scott 3859

1971. 10th Anniversary of Antarctic Treaty.
Condition: MNHOG.
Catalog numbers: Scott 3859, Standard Collection 3942, Michel 3890, Yvert 3727.
Issued on: June 21, 1971.
Perforation: comb 11½.
Printing: Photogravure and Recess.
Size: 28 x 40 mm.
Color: Multicolor.
Face value: 6 Russian kopek.
Quantity: 4,000,000.