Russia C20-C25 mlh

Russia C 20-C25, lightly hinged, $161.50. Michel 397-401, 406. Air Post 1930-1932. Airships: Communication from Tundra (deer) to the Steppes (Camel); Over Dneprostroi Dam; Over Lenin Mausoleum; Exploring Arctic regions; Constructing an Airship.