1963 Sc 2727-2729. 40 anniversary of Civil aviation of the USSR. Scott C101-C103

1963. To the 40 anniversary of Civil aviation of the USSR.
Catalog numbers: Scott C101-C103, Standard Collection 2727-2729, Michel 2720-2722, Yvert PA115-PA117.
Perforation: comb 11½.
Color: Multicolor.
Printing: Photogravure and Recess.
Print run: 3,000,000; 3,000,000; 3,000,000.