I just did a quick google search, as you no doubt have done yourself. But I came across something that you may have missed and might be useful.
I found a thread where someone called Andy Saunders comments briefly on the aircraft. when I went to his tumbler account it seems he is quite a distinguished historian, writing about the Battle of Britain etc. You might ask him about the plane. He can be contacted on the 2nd link below, if you go to 'contacts' at the top of the page.
Thread:
http://forum.keypublishing.com/showt...t-S-A-Fenemore
Andy Saunder's tumbler blogg:
http://andysaunders.tumblr.com/
I hope this helps.
setback