Is this early version of sarineen womb chair  

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I doubt it
Besides the fact that it doesn't look like anything Saarinen would've designed, the underside plate that's welded to the legs looks rough and not the kind of refined Knoll style.
Looks more like something found in the 50's film "Glen or Glenda" (i.e. make to be sat on by a travestite wearing an Angora sweater.....)

definately not KNOLL!
the knoll womb chair is well documented from its very begining. florence knoll actually asked e. saarinen to to design it as KNOLL needed a lounge chair to fit into it's collection. she told him to design a lounge chair that she could curl up in comfortably. this chair would later be called the womb chair.
that chair is not a prototype!
cool chair though! i've seen a similar very chair with an uphoustery tag marked made in canada.
oh! canada!.......

thanks for the replies, guys
thanks for the replies, guys

After some replies, the...
After some replies, the owner still think this is the early original version, with a reason he has been in the business for 20 years...

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I'm pretty sure its Dutch, there was a thread about the same chair a few weeks ago.

here you go!
No way is it an early version, tricksy dealer!
http://www.designaddict.com/design_addict/forums/index.cfm/fuseaction/th...

thanks, HP. You are the best!
thanks, HP. You are the best!