Taking into account its conception and its general look, this model can probably be attributed to the Amiot aircraft constructor. The shapes of the models are characteristic of the post-war bombers created by this builder. Moreover this model is similar to that of the Amiot 144, from which it evolved, particularly if one looks at the number written on the fuselage. Whilst on this subject it is worth noting that the number “170M4” conforms to the codification used by Amiot who produced two different prototypes in 1931 and 1937 – the 140M and the 150M respectively. Finally, this model certainly dates before 1937, since from that date the appearance of the bombers changed and were modernised to adopt a look that has been kept since the Amiot 340. One thing is certain, this research never resulted in a prototype.