In 1912 the company tried to sell another Antoinette monoplane to the Army: it was a classic design similar to the Wachter machine, called the Triplette - perhaps because it was to be a 3-seater. It retained the classic Antoinette undercarriage with a small front outrigger wheel added. On 17 October Blanc demonstrated it in front of an Army commission, and in the climb a wing tore off. This machine is often called the last pre-War Antoinette design.
   Levavasseur died in 1921, after having completed 2 other monoplanes with Jules Gastambide as a partner, these with experimental variable surfaces. The only surviving wing of this type, painted blue, white, and red, was destroyed in the fire at Le Bourget in 1990.