Thanks for the reply Stephen Lawson.
The problem turns around that particular D.H.2.
Just yesterday I was able to dig out some old Profiles in a fleamarket and one was the no. 91 about the D.H.2, the author is Mr. J.M. Bruce.
Once again the picture of the non-standard markings was there, this time the caption locate the airplane at Beauval at the 4th Army Aircraft Park in 1916. The source of the picture is reported as Imperial War Museum Q11897.
Uhm... Three different locations for the same subject are quite confusing now... and the main question is still "Why this particular airplane had so different nationals markings". At least seems that I was not so wrong to say that the markings are non-standard because in the same publication there is a colour profile of this airplane. To make more cloudy everything, the serial of this D.H.2 is, at least for me, unknown. I've spent the evening scanning with a magnifier my copy of Windsock Datafile no. 48 hoping to find some other example of this markings but with no luck... so... I still hope that someone can put some light about this thing
bye
Eugenio Cattani
P.S.
Mistake Mistake Mistake... just now I've open again the Windsock Datafile no. 48 and I've found a picture of the D.H.2 with the strange markings... s/n 5929 painted in a light colour on the rudder. Any info about it is welcome!
Many thanks!
Eugenio Cattani