1977 Sc 4623. 24th International Navigation Congress. Scott 4543

1977. 24th International Navigation Congress.
Catalogs: Scott 4543, Standard Collection 4623, Michel 4573, Yt 4347.
Issued on: 1977-01-25.
Perforation: comb 11½
Printing: Photogravure
Size: 28 x 40 mm
Colors: Black and gold on a dark blue background
Face value: 6 Russian kopek
Print run: 3,800,000