When I saw this photo I thought I’ve featured this chair earlier and that is correct. Easier to find, because correctly tagged as a J.J.P. Oud Chair, but also because it appears as a reading suggestion below this post. The Rotterdam Museum of Modern Art acquired this chair in 2010..and since the previous post I know from whom: Ad Van den Bruinhorst sold the chair to the museum. The Chair was designed for Metz and Co in Amsterdam/The Hague
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Chairs!
gje