According to the following site P2902 crashed in Dunkirk on 31 May 1940, so the SOC of 10 Aug would probably have been when all the paperwork had caught up with it.
However, I cannot find it in Frank's FC Losses Volume 1 for any period from the Battle of France to the 10th Aug.
http://www.warbirdregistry.org/hurri...ane-p2902.html