Just finishing the highly enjoyable (if a trifle dry and heavily influenced by the Cold War - it was written in 1963) 'The Transcaspian Episode' by Colonel C.H.Ellis, which details British intervention in southern Russia (Transcaspia) between 1918-1920. Ellis served in the campaign, so is great on the incidental detail that all wargamers love! Many thanks by the way to Mark Plant for recommending it.
Anyway, there is a picture of the sole recce plane that the Transcaspian/British alliance used:

Question is, what type is it? I want one, but have no clue what to look for.
As always, any or all help gratefully received.