1987 Sc 5789-5791 Soviet-Syrian Space Flight Scott 5580-5582

1987. Soviet-Syrian Space Flight.
Catalogs: Scott 5580-5582, Standard Collection 5789-5791, Michel 5737-5739, Yt 5429-5431.
Issued on: July 22-30, 1987.
Perforation: comb 12 x 12¼.
Printing: Offset lithography.
Size: 37 x 52 mm.
Colors: Multicolor.
Face value: 5 Russian kopek; 10 Russian kopek; 15 Russian kopek.
Quantity: 5,000,000; 3,300,000; 2,800,000.