Osaka 3 or BZ12 leather sofa, designed by Martin Visser in 1969 for 't Spectrum.
Very nice sofa and not offered a lot, especially not in this 3 seater version.
It has a brushed chromed metal frame and still the original brown leather upholstery, which still is in very good condition. It has leather straps underneath the seat and backrest.
The sofa is in very good original condition, also the frame is still beautiful. Only little traces of wear.