My Swedish find

I picked this up recently on a trip to Stockholm, Sweden, from a second hand store. It's slightly worn, no markings that I can find other than 3 round sticky remains of possibly a cushion along the top of the back. I fell in love with the design of the legs, height of the chair is adjustable by rotating it. All wood, though I have no idea what kind, except for a single nail probably the result of a repair at some point, otherwise the chair seems to be glued together. I'd appreciate it if someone could give any information, even guesses, as to what age this chair is and who might've manufactured it. The vendor said something like "I see you found an office chair", so that could be what it used to be.