I have a Barcelona chair & ottoman I'm trying to date. They are pre 1950's with bolted frames (intersection hidden under leather straps so post 1932).
Frame is magnetic, straps screwed into the frame and all other features.
Zippers are marked eclair, so European made (right?).
What's interesting is that the bolts used to screw the frame is hexagonal.
Thonet made this chair 1932-34 and I have been told that they where one of the few using this kind of bolt in Europe during this time.
Anyone with more info about Thonet using hex bolts or how to date the chair?