Hallo,
I am just back from a fantastic holiday in the French region of Périgord.
Among all the beautiful things I have seen, I have visited the beautiful castle of Jumilhac-le-Grand
In the castle there were a couple of old pictures of a pilot in a Ni17 (but I'm not sure, it could be an 11) with the propeller boss covered like this

the fuselage was dark, and had a white J on it, probably the fuselage was dark red...
The guide taking us through the palace did not know the name of the pilot but she was sure he was a relative of Mathilde de Dreux-Brézé, one of the "modern" owners of the castle, whose portrait was shown in the same room.
The husband of this woman was Raymond Odet Chapelle, an Egyptologist.
Anybody has any idea about the identity of the pilot?
They did not allow me to take pictures in the castle...
:-(
Antonio