3 stainless steel tube chairs and faux leather, vintage

Set of 3 typical chairs from the 60s-70s. The seat is comfortable. Metal structure, possibly stainless steel, with square tubes. The seat and backrest are made of brown faux leather. The whole set is in good condition, with no signs of rust and no tears in the faux leather. For slight signs of use: please see all the photos (sorry for the shadows) which are an integral part of the description. The maintenance of faux leather is simpler than that of fabric. The seat height is 46cm from the ground.