1973 Sc 4155 10th World Youth Festival Scott 4068

1973. 10th World Youth Festival.
Catalogs: Scott 4068, Standard Collection 4155, Mi 4104, Yt 3922.
Condition: MNHOG.
Issued on: March 20, 1973.
Perforation: comb 11¼.
Printing: Photogravure.
Size: 50 x 50 mm.
Colors: Multicolor.
Face value: 16 Russian kopek.
Quantity: 2,500,000.