Well, didn't Louis D. de Monge (designer of Bugatti's racer aircraft Bugatti Model 100 racer in EAA AirVenture museum’s Fergus Plaza) work for Buscaylet de Monge, later Société Aérienne Bordelaise/Dyle et Bacalan?
So, my last straw is Buscaylet n/n.
Shoot, beaten by 3 minutes 
Skytrain10, you must be right: Triplace de reconnaissance. 2 exemplaires construits qui ne volèrent jamais. Monoplan aile médiane. Bipoutre. Construction bois et métal.