1978 Sc 4764. 9th World Congress of Trade Unions. Scott 4656

1978. 9th World Congress of Trade Unions.
Catalogs: Scott 4656, Standard Collection 4764, Michel 4714, Yt 4472.
Issued on: 1978-04-16.
Perforation: comb 12¼ x 12
Printing: Offset lithography
Size: 28 x 40 mm
Colors: Multicolor
Face value: 6 Russian kopek
Print run: 4,000,000