Real or replica? Wegner Sawbuck CH29  

Hi.

I just bought these four chairs. Thinking they were CH29 chairs by Wegner. I can't find any markings by Carl Hansen and I know there are fake CH29's. On the website of Carl Hansen I saw the meassurements of the chairs which are exactly the same as my chairs. The details also seem to be exactly the same as the real ones. But are there any distinctive details which I could look for to see whether they are real or not?

The upholstery is probably new.

Would love to hear from you, thanks!