1988 Sc 5898 International Space Project (Phobos) Scott 5686

1988. International Space Project (Phobos).
Catalogs: Scott 5686, Standard Collection 5898, Michel 5846, Yt 5528.
Issued on: June 07, 1988.
Perforation: comb 11½ x 12.
Printing: Photogravure.
Size: 26 x 55 mm.
Colors: Multicolor.
Face value: 10 Russian kopek.
Quantity: 3,550,000.