Original set of two armchairs by the well-known Dutch modernist designer Wilhelm Hendrik Gispen. These chairs are model number 411, designed in 1934. W.H. Gispen (1890-1981) started out with a small workshop in Rotterdam in 1916, where ornamental wrought ironwork was made. Gispen produced his first artistic series of lamps in 1919. Standardized production of lamps with the brand name Giso, in accordance with modern lighting techniques, would follow almost ten years later in 1926. Gispen chairs like the one on the photo made with tubular steel are another example of Gispens famous avant garde Industrial designs. Experiments with tubular steel in furniture began in 1927. The first examples of furniture with these materials were designed for air planes. The Gispen Factory could manufacture larger quantities of furniture with tubular steel for the consumer market from 1929 onwards. Examples of Gispens furniture with tubular steel can be found in design museums worldwide.