Fitter2, don't underestimate Bri. He has it, it is indeed the Hafner A.R.III Gyroplane Mk II
Not at all Mel, no nasturtiums cast. I am constantly amazed at thedepth of knowledge on this thread; I have learned much more about some of the more obscure corners of aviation history than from my moderately well-stocked bookshelf, and been inspired to trawl some interesting corners of googleworld.