Principles of design: Balance: This could at first appear to be symmetrical, but when you look at all the elements, such as the drawers on the left & the ottomans on the right, it makes it broken up more so it's not in such tight symmetry.
ruster armchair by yngve ekstr? I have a vintage Dux chair by Folke Olssen that has that exact, loose headrest design. The pigtails on the back seem to be counter-weighted with sand, or somethingorother. File for ref.