Prototype Pre WWII era American Fighter painting by Alpnarly Lyster

Prototype pre-WWII era American Fighter painting by Alpnarly Lyster, USA, 1937, signed and dated lower right, gouache on board, depicts single engine plane in U.S. Army Air Corps markings aloft in the blue sky with white clouds, artist was a professional airline engineer in 1930's, framed and matted, image size 16.25" x 11.25", overall size 22.5" x 17.5", A- cond., (yellowing on matting, surface wear on frame).