Erno Fabry Chairs?  

Funny how the examples for sale online list them as walnut when they are clearly not.

Cane appears to be hand-woven with individual strands maybe pegged into their holes? It would be a trick applying the binder cane if that's the case, however. Repairing it seems like it would be a lot of finicky work. Either way, I've never seen that pattern before, though I like it on those chairs. Digging that upholstery fabric, too. It's almost as good as a date stamp!

@tktoo2 Thanks for the response.  Here's a detail shot of the caning.  Do you fish the cane into one hole and pull it out of the one next to it maybe?  And what do you think the wood is - beech?

Threading the cane through an adjacent hole is the traditional method ...if you can access the verso (or other side). Unless there is a separate frame that I'm not seeing, I haven't the slightest as to how this was done.

It's hard to tell in the closeup, but the images online look like stained beech to me. I do think I see telltale medullary rays typical to beech on the lower part of the back post in your last photo, though. One doesn't find those as visibly prominent in walnut.

Interesting chairs.

Hi, As long as I know there are few service providers that offer weaving for such chairs. Such chairs may not be in trend now but earlier these were easily seen in many offices and homes as well.