As with many of the French sporting weapons, they were made on the backs of the talented tube makers in Liege:



http://www.littlegun.be/arme%20belge/artisans%20identifies%20e%20f/a%20falla%20gb.htm
Littlegun gives the above as Jean Falla but his predecessor Josef Cap may have commenced with the mark.

Kind Regards,

Raimey
rse