This the Nieuport 17 ,serial number 1955,of MDL Blaise Préher downed and POW on 11/04/1917
The escadrille is N 68
downed probably by Ltn Gebhardt Salzwebel of Jasta 24 (who, is may be ,
on the the photo ?)
preher was a 'Balloon'Buster' His plane was equipped with rockets Le Prieur