Roger TALLON (1929-2011). TH" model spiral staircase in cast aluminum and laminated wood, with thirteen steps including the landing step. It includes fourteen compensation rings that can be placed between the treads (to adjust the overall height of the staircase), the circular base, the end sleeve and its cap. Landing step: Height 20 - L 67 - W 57 cm Steps: Height 20 - L 67 - D 30.5 cm Inside diameter of steps: 11.5 cm Base diameter: 45 cm (sold as is: disassembled and without core axle, minor pitting to aluminum, wear to wood) An icon of modern design, this staircase was created by Roger Tallon in 1966 for the Syndicat professionnel des fondeurs. It was published in 1968 by Galerie Jacques Lacloche under the name M400, and in 1974 Tallon designed the TH model with laminated wood treads. Sentou resumed publishing these models in the 1980s.

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