This pair of GFM-87 chairs was manufactured by Gościcińskie Furniture Factory in the 1960s to 1970s. The chairs were designed by Juliusz Kedziorek. The beech elements have been cleaned and painted in an oak mordant and polished with a lacquer. 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