1969 SC 3717-3721 Nature Reserve Belovezhskaya Pushcha Scott 3640-3644

1969. Nature Reserve Belovezhskaya Pushcha.
Catalog numbers: Scott 3640-3644, Standard Collection 3717-3721, Michel 3667-3671, Yvert 3528-3532.
Condition: MNHOG.
Issued on: September 10, 1969.
Perforation: comb 11½.
Printing: Photogravure.
Size: 40 x 28 mm; 80 x 28 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 6 Russian kopek; 10 Russian kopek; 12 Russian kopek; 16 Russian kopek.
Quantity: 6,000,000; 5,000,000; 4,000,000; 4,000,000; 4,000,000.