Philippe Pinel Wristwatch Robanne Corp

I can't find a thing about this watch. I know it is Philippe Pinel , Swiss made, 17 jewel, hand wind, gold filled and it runs.
I know it says Robanne Corporation inside the watch but ....help. Where did it originate? When?
It came from the estate of Dr. George Troxel in Winchester, Va. My deceased Mother - in - law worked as a nurse for him. My wife was named after the Dr.'s spouse and we would like some history on the piece
for our grandson's information, as well as my own.