Pull out tables by Martin Visser for 't Spectrum 1956

Very rare set of nesting tables, model Twello, designed by Martin Visser in 1956 for 't Spectrum. These tables were in production for only 1 year till 1957. One of the earliest designs Martin Visser did for 't Spectrum. The tables have a black metal frame and white laminated wooden top with wenge wooden sides. Beautiful minimalist set. The tables are in good original condition, 2 minimal damages on the edges of the top (hardly visible).