1975 Sc 4457 3rd All-Union Youth Philatelic Exhibition Scott 4373

1975. 3rd All-Union Youth Philatelic Exhibition.
Catalogs: Scott 4373, Standard Collection 4457, Mi 4407, Yt 4190.
Condition: MNHOG.
Issued on: September 30, 1975.
Perforation: comb 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Blue, red.
Face value: 4 Russian kopek.
Print run: 4,200,000.