Pair of vintage chrome stools with red seat, 1960s

Two very beautiful red stools with a chromed tubular steel frame. The seat is covered with a kind of skai imitation leather. Both stools can be stacked inside each other. The plastic foot caps are present. Unknown manufacture. The stools are not marked. Dimensions: 45 x 27.5 x 27.5 cm (HxWxD); seat height: 45 cm. Good to satisfactory condition, corresponding to the age. The seats are in good order. One stool has a stain, the other two smaller stains. There is some rust on the steel tube. Patina. 1955 to 1969 Material: chrome-plated tubular steel; imitation leather.