A prototype built in 1919 that originally started as an idea for controllable landing gear in 1917. It was originally for the military, however came to be an aircraft that would be only for civillian use. When it was first tested in 1919, the aircraft proved too slow and put of the use of non-fixed landing gear for a few more years and could've been an affordable aircraft for civillian use. It was deemed "brass button" because of the small size and the use of brass in the engines and water cooling area. This was the only model ever created and is now in the museum of air and space in the Smithsonian. Please leave a comment and an upvote if you liked it and thank you for viewing! THANK YOU!!! :D