Arne Jacobsen Mosquito Desk Chair  

That is from the early to mid 60´s, after ca 1961 and before 1968.
Never seen a rolling version of this chair before.

Thanks for the info. do you think the vinyl is original? Thanks again, Pam

Hi Pam.
Its possible it is, but impossible to say from the pics that you posted.
A clear shot from the underside would help.

Hello Again,
Here are a few photos- I also added a pic of the back of the chair- the seams look sort of a rough.
Thanks, Pam

I found this photo on the net -the chair in the middle left side photo looks like the desk chair.

I have never seen one of these chairs with upholstery before, so cant say for sure.
But it looks original to my eyes.
Is it leather or vinyl?

The upholstery material looks like it was hand-stitched but the stitches aren't as even as you'd seen on, say, a Swan chair in leather. The padding also looks a bit lumpy on the perimeter of the seat in the photo that shows the underside. Would it be possible to show a clear, in-focus closeup of the stitching on the back?
What are the indentations in the vinyl or leather from the shock mounts? It looks like the whole base was rotated a couple of inches, except not really because the dents sort of fade off at one end. Weird!

Hello,
I would say vinyl - I never noticed the shock mounts before but it does look odd. Here are some additional photos- hopefully they are a bit clearer.
I did a search and found a few chairs similar on a site Metro Modern- but the shock mounts are different.
I have also enclosed a photo of another chair that I would love to have more info. I was told it was a chair from a library in France. I also saw a pair on 1st dibs but little info. Any ideas?
Thank you for all your help, Pam

I meant more like pics taken from a distance of 8-12" or so, but what you posted is enough to determine that the seams are hand sewn, though I was pretty sure of that before.
It looks more like leather than vinyl to me, only because the pebbling isn't super-uniform like it is on almost all vinyls. You should be able to know for sure if you have a magnifying lens, though. Under magnification you can see pores in leather whereas vinyl is just a solid surface.

Pam – Your second chair reminds me of Mario Botta's Seconda chair. I do not think that attribution is correct, but it might be a good place to start your search.

I could not see small pinholes but honestly it's difficult to see clearly even with a magnifying glass. Thank you for all your help. I appreciate it.
And teakhound- thank you. Hopefully I will be able to post more info. on it in the near future.