Iron sculpture , 1950 approx. sculpture , unsigned . from then on he became a well-known and prolific painter of materials. Birker returned to the Netherlands in 1985 - total dimensions 42 x 45 x 23 cm. including the base - sculpture with rust and flaws due to rust. 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