1975 Sc 4407 Apollo Soyuz Test Project Scott 4324

1975. Apollo Soyuz Test Project.
Catalogs: Scott 4324, Standard Collection 4407, Mi 4357, Yt 4144.
Condition: MNHOG.
Issued on: May 8, 1975.
Perforation: comb 12 x 11½.
Printing: Photogravure.
Size: 55.5 x 26 mm.
Colors: Multicolor.
Face value: 20 Russian kopek.
Quantity: 5,300,000.