1974 Sc 4257 250th Anniverrsary of Russian Academy of Sciences Scott 4171

1974. 250th Anniverrsary of Russian Academy of Sciences.
Catalogs: Scott 4171, Standard Collection 4257, Mi 4207, Yt 4009.
Condition: MNHOG.
Issued on: January 30, 1974.
Perforation: comb 11½.
Printing: Photogravure and Recess.
Size: 40 x 28 mm.
Colors: Multicolor.
Face value: 10 Russian kopek.
Quantity: 4,100,000.