2, was a prototype, all-metal framed, high-altitude sesquiplane fighter and reconnaissance aircraft with a supercharged engine, built in France around 1920.
2 shared many external features with the earlier Borel-Boccacio Type 3000, or Borel C.2, a two-seat fighter tested too late for World War I, in 1919.
The tail was conventional, with a broad-chord, triangular fin which carried a broad rudder of rounded profile which extended down to the lower longerons.
Its semi-elliptical tailplane was mounted on top of the fuselage and braced from below with a pair of parallel struts.
[2][3] The fighter had a conventional fixed undercarriage with wheels on a single axle joined by rubber links to a transverse strut mounted on the lower longerons by a V-strut at each end.
It had arrived too late for World War I and may have been exhibited at the 1922 Salon solely for its metal construction, then quite novel.