1962 Sc 2636-2638. A.G.Nikolayev and P.R.Popovich’s first-ever formation flying on the space ships «East-3» and «East-4». Scott 2627-2629

1962. A.G.Nikolayev and P.R.Popovich’s first-ever formation flying on the space ships «East-3» and «East-4».
Catalog numbers: Scott 2627-2629, Standard Collection 2636-2638, Michel 2634B-2636B.
Perforation: Imperforated.
Color: Multicolor.
Printing: Photogravure. Offset lithography.

Print run: 500,000; 500,000; 500,000.