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So... I'll say its the Bahyl Helicopter of 1901.
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Well, I can tell you that it's not.
Thanks to the efforts of a scale modeler called Martin Mikulus, the rest of the world can see what the 1894 Bayhl helicopter looked like. More photos
here. Quite possibly, this is the design that the 1895 patent was granted for.
Here is a photo of a helicopter rotor test-rig he built in 1895. Note the etching at the base of the model, presumably lifted off from a published account of his experiments. More photos
here.
This is Martin Mikulus' model of the 1906 "Avion" design. More photos
here. I *suspect* that Jan Bayhl and Bahily János are one and the same person, and that the change in the name was a reflection of the cultural-political shifts that were happening in Eastern Europe at the time. (Someone may care to correct me on that!)
Cheers,
Paul