May I join Lefty with my personal compliments for the brilliant deductions of Robert and Uli on the Indraero (aus einem quasi Wrack eine glänzende Folgerung). But wait, within the next 50 years or so I'll be able to do the same!Considering the only visible bits (fuselage, gear, engine,struts, etc ) have absolutely nothing in common with the original in 1000photos, I think you chaps did exceptionally well !
Could she be an early Focke-Wulf like i.e. the S-1?back to the current mystery: famous designer, several built