Helle Benew0,
Don't know if this is any help to you, but I've compared my genuine classic carrera chrono with the one I found here. These are the flaws I've found:
The subdials are too thick and the color white isn't correct: it looks a bit silver-white, while mine is more off-white, like the color of the Daytona Paul Newman and the Speedmaster Legend, 6th title limited edition. I love this color on the gen by the way, it gives the watch a real classic look.
The racing strap (wich is a must if you ask me) has white stitching, but mine has black.
The back of the rep says 'Swiss made since 1860 Sapphire Crystal' in a round, then the Tag logo in the middel and the type 'CV2088'. That isn't correct. Mine says 'Swiss made since 1860' in a round, then the Tag logo in the middle, then the model wich is 'CV2113' and at the bottom it says 'sapphire crystal' in a round.
And, but you already knew that, the datewheel should be black on the black version and white on the white version.
If you want I can post some macro-pics, but I don't know if that is much appreciated, since it's a gen and this is a rep-forum (I'm new here )
I love this watch and that is why I own it in genuine. The only thing is, I think it's a bit too small. I also don't like big watches, but in my experience a 42mm is the best. If you wear suits all the time like I do, a bigger watch is just trashy. It makes you look like a bouncer. My biggest watch is a Chopard MM GMT but I never wear it with a suit. So what Í try to say is: it might be a bit too small...