Hello CJE,
Maybe if someone would post that photo, we would know more.
According to
Armée de l'Air - Order of Battle, 10th May 1940 G.A.O. 501 , with 6 Mureaux 115 (based at Dunkerque-Mardyck) and G.A.O. 552, with 6 Mureaux 117 (based at Saint-Omer-Wizernes) were attached to the 7e Armée. Can't it be that in the chaos of those May days the loss of the plane we're talking about wasn't recorded?
Regards,
Bart