1938 Sc 546 Air Sport in U.S.S.R. Scott 686

1938. Air Sport in U.S.S.R.
Catalog numbers: Scott 686, Standard Collection 546, Michel 645.
Issued on: October 7, 1938.
Perforation: comb11¾ x 12¼.
Printing: Typography.
Colors: Multicolor.
Face value: 1 ₽.