F-GPJS —

1937 Stinson Reliant

985 ?

This Stinson SR10C is powered by a Lycoming R-680-5-B5-D5, which is either 260 or 300 HP.
One way to tell the difference is that Lycoming puts their data plate for this model in the 7 o-clock position on the front case and you can see the hexagon with the "L" inside on the top left corner, 985's have the data plate on the other side of the case.

A very nice photo of a beautiful aircraft.