Help Identify this Couch!  

Ib Kofod Larsen
For Selig

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I don't know who designed it, but I'm pretty sure it's not by Ib Kofod Larsen.

Well
Alright: The selig catalog photos I am thinking of don't bear Ib Kofod Larsen's name as the designer. There is no designer mentioned on them.
http://www.fagasstraps.com/photos.htm

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The one by Ib Kofod Larsen is similar, but some details are different.

Not to be pedantic, but...
Not to be pedantic, but which details exactly are different?

Thanks for all the info! Is...
Thanks for all the info! Is there any way to be sure it is for Selig by Larsen? Does he have any definitive characteristics, or have people been knocking off his style since the beginning? I will try to get some better pictures up later today.

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Many details are different, see link below.
http://inside-room.de/archive/ib-kofod-larsen-easy-chairs/

Ah yes, well the link you...
Ah yes, well the link you provide is an entirely different chair. The original poster's chair is often attributed to Kofod Larsen as well. I'm not positive I've seen any catalog pages or advertisements that officially link them to Kofod Larsen, but they were imported by Selig as I've seen several examples with the Selig medallion. I've also seen several examples without the Selig mark, but it seems that two different seats were used: One with a Selig medallion and Fagas straps, and one without the medallion and with dowels and Pirelli webbing. I've seen the dowel / Pirelli seat on the chair you've linked to as well. The original poster's chair / sofa will likely be embossed "Made in Denmark" on the back of the front stretcher. I could be wrong about the Kofod Larsen attribution, but being Selig I would presume it would be Kofod Larsen or Poul Jensen (who may or may not be fictional).

Link to example with Selig medallion
Link to example with Selig medallion:
http://www.littleluxuriesco.com/?wpsc-product=selig-lounger

I have a few more pictures...
I have a few more pictures that might be of some help. The bottom appears to have been redone a number of years ago. I'm assuming this is typical because us big 'ole 'mericans can easily wear through a seat designed for the dainty and agile Europeans. Plus its old. The arm rest looks different from the pictures in the old catalog, and I cant seem to find another couch that has the 3 seat couch + chair option. I have to agree with our beloved pioneer leaf ericson that the designs looks remarkably similar but, are unattributed to a specific designer. Thus far is it safe to assume it was produced by Selig? Has anyone else seen the 3+1 option by Selig? The notch towards the back of the chair brace seems to separate it from other designs.
This seems to be it almost exactly, without the removable chair.
http://www.ebay.com/itm/4-Piece-Vintage-Selig-1956-Danish-Made-in-Denmar...

The chairs and sofas all use...
The chairs and sofas all use the same parts - they're interchangeable since the knock down. The "armless" sides are optional; some sofas / chairs have them, and some don't. This is true for several Seligs: the style Onno posted, your style, and even the Z chair. The one curious thing about yours is the little dowel on the armless side. I've not seen that detail before.

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I would be very surprised to discover this couch is not a Selig product. Below is the photo of what looks exactly like the the chair version of this couch. Small details and all. And this is the photo I was thinking of at the beginning; thought it said Ib Kofod Larsen, but it doesn't say anyone unfortunately.
OP: maybe you should contact the Fagas Straps people who seem to have a Selig catalog and inquire as to whether this couch is in there, as well as whether the designer of the chair just got cropped out

Thanks for all of the helpful...
Thanks for all of the helpful info. I emailed Fagas Straps but they are away from the office at this time.
I'm definitely interested in trading for a single chair, or other mid century furniture if anyone wants this.

Just for the record,
the webbing was most likely redone because the original rubber webbing hardened with age. It had nothing to do with the size of the people sitting in it. (Maybe you were joking, Tex, but this is the kind of thing that starts one of those internet myths.)
A lot of conventional upholsterers and even more DIYers will use whatever is conveniently available when redoing webbing, which is usually that 3" wide jute webbing. This was especially true 15+ years ago, before there was much of an internet. And local fabric stores still only carry jute webbing, never rubber or elastic webbing. At least not that I've ever seen.