1974 Sc 4364. 250th Anniversary of Leningrad Mint. Scott 4275

1974. 250th Anniversary of Leningrad Mint.
Catalogs: Scott 4275, Standard Collection 4364, Michel 4314, Yt 4108.
Issued on: 1974-12-11.
Perforation: comb 11¼
Printing: Photogravure and Recess
Size: 50 x 50 mm
Colors: Multicolor
Face value: 6 Russian kopek
Print run: 3,100,000