I think perhaps the clue in Graeme's diagram is the colour reference "Hell" & "Dunkel". Would suggest the aircraft is perhaps German. I am sure when Graeme first posted his challenge image there was more detail, the cockpit sides I am sure had hinged panels. The Arado Ar 65 has side flaps to the cockpit but the panel of the Ar 65 is different. However I think the aircraft is German.
In fact it is I believe the Focke Wulf Fw56A.
Last edited by MReyn24050; 28th Jun 2013 at 10:03.