Does anyone recognise this logo?  

Weird logo. How about some photos of the chair in question. That would be very helpful. It is strangely reminiscent of the Godtfred H. Petersen logo, but I doubt it is related to GHP at all.

Sorry, I actually thought I had uploaded pictures of the chair!

I really like it regardless, but it had crossed my mind it was contemporary. It's listed a bit too high for me though, was just curious.

The rust on the flat head screws attests to its age.

Love that chair, I hope you can get it at a price you are happy with! It

It's weirdly attractive. I'm much more into wood most of the time, but I this did grab me a little. I can imagine it springs a little as you fall into it.