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a chair that is sitting on a stand with a magazine rackan image of a chair with a black leather seat on a white backgrounda chair that is sitting on a stand with a black seat
Crait + Müller

106 - RIETVELD Gerrit Thomas (1888–1964) (attributed to) & HOPMI H…
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Estimate €400 - €600
Sale commission
Description
RIETVELD Gerrit Thomas (1888–1964) (attributed to) & HOPMI HOLLANDSCHE PATENT METAALINDUSTRIE UTRECHT (Produced by) Theatre armchair with folding seat, featuring a red lacquered steel tubular frame. Black lacquered wooden armrests. Backrest in curved beech plywood and seat in moulded plywood, both lacquered black; folding seat. Bears a blue enamelled plate from the manufacturer beneath the seat, reading ‘HOPMI – Octr. aangevr.’ (patent applied for). Circa 1934 Height: 91 cm – Width 57 cm – Depth 32 cm with seat raised, and 54 cm with seat lowered - History: Hollandsche Patent Metaalindustrie, founded in Utrecht in 1917, manufactured locks and bicycle accessories; it only produced steel-tube furniture from around 1932 to 1934, in collaboration with the neighbouring chair manufacturer U.M.S., later known as Pastoe. Its furniture is assembled using a patented double-threaded ‘torpedo’ nut, developed by its technician Herke Tulp, which allows it to be completely dismantled: this is the invention referred to by the inscription ‘octrooi aangevraagd’ on the plate. A chair using the same system, given to Gerrit Rietveld, is held at the Centraal Museum in Utrecht (inv. 31127). The auditorium model was used in the Vreeburg cinema in Utrecht, which Rietveld rebuilt in 1936, and in the Remonstrant church on Diepenbrockstraat in Amsterdam, where a few of the firm’s red-lacquered tubular seats still remain.
See original version (French)
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About the sale TAKE A SEAT! A selection from the Werner Löffler collection
Auction location
Auction time 10/27/2026 at 1:30 PM
Pictures credits: Contact the Auction House
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