1977 Sc 4624. 16th Soviet Trade Unions Congress. Scott 4544

1977. 16th Soviet Trade Unions Congress.
Catalogs: Scott 4544, Standard Collection 4624, Michel 4574, Yt 4348.
Issued on: 1977-02-09.
Perforation: comb 11½
Printing: Photogravure
Size: 28 x 40 mm
Colors: Dark brown and gold on a red background
Face value: 4 Russian kopek
Print run: 4,300,000