Pine dining arm chairs by Edvin Helseth for Stange Bruk, Norway 1960s Set of pine chairs from the “Trybo” series, model 313 designed by Edvin Helseth (1925-2007) and produced by Stange Bruk, Norway 1960s. The chairs are assembled with wooden pins. No screws were used for the chairs. The backrest is movable for comfort when sitting. The measurement is 70 cm high, 52,5 cm wide and the depth is 47 cm. The seat height is 46 cm. The total weight is 14 kilos. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution