Swivel architect workshop office chair from the 1930s

Architect's workshop office chair from the 1930s swiveling on spring (cannot be raised or lowered) in its original condition with stains and marks of wear and cracking on the seat which does not takes nothing away from its comfort and solidity dimensions: seat: l 42 X d 40 X h from the ground 50cm (when you sit down it goes down a few centimeters) backrest: l 41 X h 35cm total height 85 cm.