1968 Sc 3574. For solidarity with the Greek democrats! Scott 3500

1968. For solidarity with the Greek democrats!
Catalogs: Scott 3500, Standard Collection 3574, Michel 3525, Yt 3395.
Issued on: 1968-08-16.
Perforation: comb 11½
Printing: Photogravure
Size: 28 x 40 mm
Colors: Brownish-gray, dark-gray and brownish-lilac
Face value: 6 Russian kopek
Print run: 4,000,000