Charlotte Perriand  

Well, there is a good chance...
Well, there is a good chance Perriand designed more than one stool. I doubt you will get a good answer until you supply a photo. And of course we need to determine that she actually designed the stool you have.

Perriand picture
Offcourse, how silly of me not providing a picture. Anyone interested can follow this link:
Hope this helps...

Sort of a
"bucket seat," no ? (Who's betting that the leather has stretched considerably since it was made ? Not as comfortable as it was, I'm guessing -- or am I wrong ?)
(Call me silly, but I love swimming around in those huge photos. . .!)
(How about a whole book written entirely between parentheses ?)

From looking
at the picture I have great doubts about your claim that it could or would be a Charlotte Perriand. The rivet links on on the leather are neither Corbusier or Perriand-like and the steel tubing details fail that test to...so I am anxious to hear about the origins of theis stool

looks like a vaguely similar...
looks like a vaguely similar copy (and that's being generous) of the real thing. though, to throw in my 2 cents, even the real version of this is pretty average; among the least impressive of her oeuvre.

ycl
this must be a lower end knock off of a later design of hers,this is not up to her level/style.

Okay, I'm speaking as the...
Okay, I'm speaking as the designated layman, and I am as usual ready to be exiled to an aesthetic re-education camp by the pros around here, but wouldn't this chair look pretty, well, pedestrian anywhere but in a German U-Boat. I don't see any elegance of line or form. The hoop that reinforces the legs seems an incongruous after thought having nothing to do with the rather nifty seat and back frame tubing structure. I don't see any elegant design solution to any apparent problem here save for how to unsubtly and ungracefully combine chrome tubing with Brooks-bicycle-seat thickness cow hide and Marine grade rivets.
If you can tie it to a famous name it is always worth something, but as a design, whew, it just doesn't seem the expression of a powerful design intelligence.

which is....
why it is wery doubtful that Mrs Perriand has anything to do with it.

So. . .
is there a stool by CP that resembles this example, or not ? The various responses by our close friends leaves me unsure even of this basic question.
I must say that I find the combining of two elemental materials, as this object does, is always worthy of interest: is the combining artfully done ? Is each material -- in the form used -- worked in a worthy way, respecting at least the intrinsic qualities and the inherent limitations ? Is the result more than 1 + 1 = 2 ? (Or would that be asking too much ?)
In the present case, the leather wraps the tubing in the obvious, one might say "time-honored" way, and is fastened using one of the traditional methods. Moreover, the shape of the upper/rear part of the leather is curved in echo of the tubing as it bends there. My criticism of the shape as it pertains to (probable) comfort has already been registered. But is this just too pedestrian a solution to a leather-sling-seated stool -- or does it fail to satisfy for other reasons ? Maybe if it were not being ascribed to such a notable designer ? (Mind you, I would reject it utterly if it were found not to be acceptable to my backside !)
What do you say ?

On second
thought. . .you have already "said." And, looking at it again, I find that it fails the "grace" test -- maybe it IS a bit pedestrian, or "unevolved," as they say.
So -- did she do one too, and a better one at that ? Anybody got a picture of "the real thing"?
[I've followed Patrick's directions (I think) for posting photos -- I can do them by a different protocol quite easily, elsewhere, now -- but it doesn't work for me here at all !]

Thanks to SDR...
Well, I gave it another look the footrest is very common(in a bad way)not classic solution way...I know why you like the snaps?

tsk-tsk
(is that a universal sound ?) I'm not into "leather," myself. . .but I take it as a compliment anyway. (I've been cruising online porn for the first time (!) but that's another story. . .)
So -- Perriand/lite, or no ? Maybe Andree Puttman. . .? Tony Perkins ?

I thought I had seen a stool...
I thought I had seen a stool similar to this attributed to Perriand before. Perhaps this was the one you had in your mind?
http://retrotrading.co.uk/big_item.php?item=peria

Whitespike
thank you,the pic shows: knock offs pull the wings off butterflies...