Love the vintage patina look? These have got loads of unique character. They at least 40 - 50 years old, and while they have surface wear and some nicks & dents, they are well made, stable chairs.
Swiss made by the Stuhl- & Tischfabrik Klingnau, and very similar in style to Vitra's Basel chair, and the horgenglarus 'classic'. Currently 3 in stock.
Price is CHF 65 / per chair
save 71 kg CO2eq when you buy a secondhand chair, instead of new