These Mid Century (1960’s) chairs were designed by Charlotte Perriand specifically for the French Ski Resort of Les Arc and manufactured by Italian company Dal Vera. 
They are constructed of chromed tubular steel with one piece of strong saddle leather for entire seat and back. 

Height: 87cm
Width: 50cm
Depth: 52cm

All of the chairs are in generally good condition. 
Like all leather furniture, surfaces change over the years and while in generally good condition the chairs have been well used.
 However, like most sixty year olds, some of the stitching has come loose and there are a few marks that add character. 
Also two of the chairs have damage to one of the leather side pieces that connect the chair to the support. 
When we got an estimate for an upholsterer to prepare the damage, they quoted £150-200 for both depending on how close we wanted to match the leather.