Set of Mid Century Scandinavian Modern in the manner of Cadovius Pia Chair 60s

Exceptional and very rare pia chairs. This set of four chairs has the peculiarity of having its backrest made of teak and its legs made of beech. They could perhaps be an old prototype. Upholstered in a beautiful green velvet. They are in good condition. Measurements: height 74 cm. Width 48 cm. Depth 45 cm. Seat height 45 cm.