High stool in wood and metal

Architect's stool 1950 sitting in wood (certainly beech), metal structure, very good condition, minimal traces of wear. Metal feet are welded onto a rounded square tubing used. Footrests and welded on a square plate screwed under the seat. Original screws, original metallic grey paint, original varnished seat. It is 71 years old. Dimensions: round seat diameter 30 cm, height 72.5 cm, square base on the ground of 36 cm. Exceptional stability, no indication of brand, or provenance.