Reclaimed mid century Cox stackable chairs

Vintage Mid-Century Cox stackable chairs with curved plywood seats and backrest, and blue painted steel frame.  The paintwork is worn in places and there is some surface rust.  The back of the seat frames is marked Cox.  There are chips and dinks to the wood, and one has damage to the top layer of wood at the front of the seat and to the lower part of the backrest.  The damaged one is priced at £25 and the other two at £45.  Overall dimensions are given below and seats measure 40.5cm wide x 45cm high x 45.5cm deep.