1980 Sc 5041-5043 20th Anniverrsary of Gagarin Cosmonaut Training Centre Scott 4862-4864

1980. 20th Anniverrsary of Gagarin Cosmonaut Training Centre.
Catalogs: Scott 4862-4864, Standard Collection 5041-5043, Michel 4991-4993, Yt 4730-4732.
Issued on: September 15, 1980.
Perforation: comb 12 x 12¼.
Printing: Offset lithography.
Size: 27 x 57 mm.
Colors: Multicolor.
Face value: 6 Russian kopek; 15 Russian kopek; 32 Russian kopek.
Quantity: 6,000,000; 4,800,000; 4,500,000.