Rer-bonjour
In the reverside of the photo, Mdl Marcel Nogues is mentioned
as 'POW and not injured 'on 24/4/1917 flying in a Spad with hispano suiza engine 8 cylinders V
In the reality Marcel Nogues from escadrille Spa12 ,was downed and Pow on 13 april 1917 , and not 27/4/1917,when flying a Spad VII serial Number 1057 -
The insignia of escadrille Spa 12 was a blue/white pennant and had nothing to do with the leopard insignia of escadrille Spa 78 which can be seen on your photo ????
The notes on the reverside don't fit at all with the plane on the photo
And escadrille 78 and 12 were not at same place of the front in March/april 1917-
Marcel Joseph Maurice Nogues - The Aerodrome - Aces and Aircraft of World War I
On the other hand, the Caporal Marcel Egret , from escadrille SPA 78was MIA on 26 or 27/4/1917-probably shot down by W albert Ltn
Jasta 31-near Nauroy-
Cordialement
Bruno