Rare NAA National Aeronautic Association Brass Collar Insignia Vintage Set Of 2

Extremely Rare Vintage NAA National Aeronautic Association Brass Collar Insignia Set Of 2. The National Aeronautic Association began in the US in 1905. This pair of pins came with a bunch of WWII military insignia, which makes me think this pin set is from a similar time frame. They are in preowned used vintage condition. Please take a look at the photos for details and feel free to ask questions. I am happy to help! 😃