Original 1933 Netherlands airmail stamp (Scott C13), issued for special flights (bijzondere vluchten). This triangular 30 cent green stamp features a striking image of a propeller aircraft seen from the front, with "Luchtpostzegel voor bijzondere vluchten" inscribed along the sides.
Country: Netherlands
Date: 1933
Denomination: 30c
Design: Triangular with aircraft and bold typography
Catalog: Scott C13
Condition: Mint, hinged, light gum disturbance (see photos)