Can you post an image of the marks to the right of Rectifie C.A. & 17,1mm & 17,0mm? That might point to a maker.

True, I don't really think it is a bona fide VC, but it utilizes VC designs used by oh so many St. Etienne - Stéphanos makers. Then again VC really doesn't know their own history in detail.

Cheers,

Raimey
rse