This is the Royal System:
It's a modular, wall-mounted shelving system in teak, first created in
the late 1940s by Poul Cadovius.
The basic design, of uprights from which shelves are hung with brass
supports is also used in other systems, which I think were based on the
There's the Randers Møbelfabrik PS System, by Preben Sørensen:
And Sven Ellekaer's design for Albert Hansen
Any others from the same era?
I noticed that now even IKEA are doing their version:
<http://www.ikea.com/gb/en/collections/svalnäs/>. It looks OK, but
frankly bamboo doesn't can't match teak.
And a company is making the Royal System (sort of, they've messed it
about a bit) again: