1925 Sc 104-105 Alexander S. Popov Scott 328-329

1925. Alexander S. Popov.
Catalog numbers: Scott 328-329, Standard Collection 104-105, Michel 300-301, Yvert 338-339.
Issued on: October 1, 1925.
Perforation: comb 13½.
Printing: Intaglio.
Colors: Deep blue; Olive.
Face value: 7 Russian kopek; 14 Russian kopek.