The Gastambide-Mengin monoplane (later Gastambide-Mengin I Gastambide-Mengin II and Antoinette II) was an early French experimental aircraft designed by Leon Levavasseur and was the first aircraft built by the Antoinette company. The name came from Jules Gastambide who financed the company and Gabriel Mengin the aircraft engineer.
Made by Antoinette (manufacturer).