All good questions, but I'm afraid I cannot answer them.
Point 1, I should probably find something more productive to waste my time on, but I do find the whole fake Leica subject very interesting.
Point 2, The immediate telltale signs of a fake do not seem to be present with this camera. I have never really understood the economic drivers to produce low value fakes, but if someone is prepared to go to these lengths then I'm sure they will turn/have turned their attention to higher value Leica.
You are right, the numbers on shutter speed dial are strangely skewed.
Cheers,
Mark