1955 Sc 1726-1728 Airplane Scott C91, C93-C94

1955. Airplane.
Catalog numbers: Scott C91, C93-C94, Standard Collection 1726-1728, Mi 1760-1762A, Yt PA98, PA100-PA101.
Issued on: May 26, 1955.
Perforation: comb 12 x 12½; line 12¼.
Printing: Offset lithography.
Colors: Multicolor.
Face value: 1 ₽; 2 ₽; 2 ₽.
Quantity: 3,000,000; 2,000,000; 2,000,000.