Had a real hectic day today, knocking-off now and only time for a short look with only hunches to go on!
Not had much luck and gotta to go now; so a parting shot based on the fact that it's a twin-float sesquiplane, powered by a nine-cylinder radial engine and that it's predecessor had full span ailerons.
French, only one built and Bu**er all on the web in the way of drawings or photos, so it would be an ideal challenge!!
Is it the Levy Biche LB-4 seaplane of 1927 powered by a 420 hp Gnome & Rhone 9AB ??
Open house Please in the exceedingly unlikey event of this being correct.