Meerdere - Uitzoekpartij luchtpoststukken, vnl. speciale en 1e vluchten NOR, interessante frankeringen, stpls - 1931

A search lot of over 240 airmail items, mainly special and first flights NOR, with interesting frankings and cancellations, many KLM first and special flights, aerophilately, helicopter and balloon mail. Between about 1931 and 1990.
Also commemorative cards with illustrations and special cancellations from the 1940s.
A superb bargain.
Naturally with some signs of wear due to the ravages of time.
Photos are part of the description. Look carefully, everything is shown as much as possible.
Will be shipped carefully, well packed, and as a trackable package."