For expo 70 japan, held in 1970, the company ‘t spectrum sent, among other items, armchair sz07. this was exhibited at their pavilion together with model sz08 - ladies' armchair (osaka) and model sz09 - gentlemen's armchair (nagoya). The expo 70 exhibition was a resounding success for the dutch pavilion; therefore, the dutch pavilion was depicted on a dutch postage stamp in 1970. The expo was also very successful for ’t spectrum and martin visser, and the models received high praise. after the expo, the armchairs acquired names such as kyoto, osaka, and nagoya. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution