1939 Sc 602 Aviation day Scott C76A

1939. Aviation day.
Catalog numbers: Scott C76A, Standard Collection 602, Michel 710.
Issued on: August 18, 1939.
Perforation: comb12 x 12½.
Printing: Typography.
Colors: Multicolor.
Face value: 30 Russian kopek.
Quantity: 500,000.