: This is a World War II instructor collar insignia for the National School of Aeronautics (NSA), a United States Army Air Forces flight training school in Kansas City, Missouri. The insignia is in the shape of a winged propeller and has red, white and blue enameled stripes on the wing shoulders. The insignia was made by Green Company in the NSA's hometown.
VINTAGE: Circa World War II.
SIZE: Approximately 9/16" in height and 1-1/16" in width.
MATERIALS / CONSTRUCTION: Gilt brass, enamel.
ATTACHMENT: Horizontal pin with drop-in locking swivel catch.
Loss of gold. Tarnish. I polished the pin and pictures reflect before and after.
