1987 Sc 5750-5752 Cosmonautics Day Scott 5545-5547

1987. Cosmonautics Day.
Catalogs: Scott 5545-5547, Standard Collection 5750-5752, Michel 5698-5700, Yt 5395-5397.
Issued on: April 12, 1987.
Perforation: comb 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Multicolor.
Face value: 10 Russian kopek.
Quantity: 3,300,000.