Press Photo of Royal Netherlands Indies Air Force Fokker Trainers in Flight -circa 1940's

Original vintage 7x7" press photo of 9 Fokker trainers (assumed) in flight.  Press release taped to the back reads: "Training planes of the Royal Netherlands Indies Air Force during formation flight.  Planes shown on picture were built in Holland, prove very useful for training new pilots". Very good; on upper left corner bend.