Perplexing Danish sofa  

perfect fit
What makes them seem so right together (among other things), is the fit of the shorter sofa on the "short" side of the Finn Juhl coffee table.

It also exists as a chair.
http://refurniture.dk/shop/hvilestol-888p.html

I love that chair...sofa also.  Probably one of the danish modern sofa/chairs I have seen that I like the most.  I think if I ever came across one that I would definitely think about buying...not that I really have room for it, but I am house huntin, so you never know LOL  Was it ever determined who made it?

I don't think so. 

Well, shucks 🙁