1987 Sc 5826-5828 Science in USSR Scott 5617-5619

$1.25

1987. Science in USSR.
Catalogs: Scott 5617-5619, Standard Collection 5826-5828, Michel 5774-5776, Yt 5460-5462.
Issued on: November 25, 1987.
Perforation: comb 11½.
Printing: Photogravure and Recess.
Size: 28 x 40 mm.
Colors: Multicolor.
Face value: 5 Russian kopek; 10 Russian kopek; 20 Russian kopek.
Quantity: 3,400,000; 2,900,000; 2,600,000.

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SKU: SU 5826-5828