Beautiful, Arnaud!
I'm slowly catching up with many of the more interesting older threads here on the Forum, and this one is one I'd missed until today. By some weird coincidence (or synchronicity, as Jung would call it!) my oldest son and I went to a hobby shop in Hartford, Connecticut on Saturday, where he fell in love with the old Meikraft kit of the Lloyd 40.15 and bought it. Neither of us had ever even heard of such an aircraft... he hasn't done any modeling since he was around 12 or 13 (he's 37 now!) but his stash of WWI kits is larger than mine, and he plans on starting again "someday..."
Is yours from the Meikraft kit? It's a fascinating aeroplane, in either case!
Dave V.