Hello,
Currently on ebay is a photo of Airco DH.2 7866 at:
https://www.ebay.com/itm/WW1-a-Royal...kAAOSwpE5f5R4X
Although the photo has been somewhat disfigured by the seller this is still an interesting photo as the machine appears to be from a training unit based on the large serial number on the nacelle.
Merry Christmas,
Clint