Mid Century Chair Skeletons  

Going back to the beginning, I'm pleased to see how well-anchored are the rear legs of the Papa Bear chair. Those aren't going to move . . . !

Tilt mechanism in an early Jacobsen Swan chair (Fritz Hansen)

Lounge chair by Bramin of Denmark, of molded foam on teak base, minus the seat cushion

NV-45 settee by Finn Juhl; appears to be a rosewood version, which I believe were only made by Niels Vodder.
Unfortunately not mine. I found these photos on a Japanese website.

... and a teak version, compliments of Lauritz.

Risom beat me to the punch a long time ago . . .
Upholstered arm chair: Jens Risom for Knoll during the late 40's

. . . and later on in a factory in Australia, producing a chair from Jens Risom Design. Here is the interesting caption that accompanied the photo.
Risom at the factory of William Latchford & Sons, in Melbourne, Australia. The company (1953–86) was a licensee for Risom and Knoll, and Risom liked to walk the factory floor to make sure workers understood the importance of his designs as well as the construction and finishing. “I liked to get them excited, even if only about carefully sanding the underside of an arm or leg support,” explains Risom.

The interwebs have this walnut framed barrel back chair as being designed by Milo Baughman, probably the most falsely-attributed mid century designer out there. Whoever designed and made it, these are some nice skeleton photo angles.

Nice chair frame, but not Erik Buck. There are so many that look somewhat like that I am not sure what I am seeing.

Florence Knoll 2 seat sofa. Interesting that they "dropped" the bottom an inch or so. I'm assuming so it could accommodate coil springs and still look sleek. The dropped bottom sits down inside the frame.

I'm going out on limb here and attributing this (these) to Erik Buch. No markings whatsoever. A penny for your thoughts...
Any other help with these would be greatly appreciated!
I've added other pictures, too.
The little steel pegs are what hold the seat in place.
Notice the joinery where the leg(s) meet the side rails (was this not a Buch trait)?
I love the way the back pieces taper up, getting closer together nearer the top. And the little "horns" at the top.
The machine screws hold the back in place. Perhaps someone can identify the words on the head of the bolt?
Thank you in advance.

H.W. Klein chair with not many original clues intact.

This thread popped up in a search I just did for something else and I see some photos are missing.  Here's the photo of the tilt mechanism of an old Swan chair by Jacobsen that I posted a few years ago.  Unfortunately the tilt lever was missing from mine.