Set of 4 Marcel Breuer Cesca Chairs by Knoll

Set of four cantilevered chrome plated steel and cane "Cesca" chairs designed by Marcel Breuer for Knoll. Unsigned but acquired from the estate of a former Knoll employee.
Condition: Very good, one chair shows chrome loss on one upper backrest support (pictured below)
Measurements: 18.5" x 23.5" x 31.5" height