Set of six black leather CAB chairs by Mario Bellini For Cassina, Italy 1970s

The CAB chair, designed by Mario Bellini in 1977 for Cassina, Italy, features a tubular steel skeleton with stretched, stitched leather fastened by four zips. This minimalist design is conceived as an extension of the body and is made from durable saddle leather. Known for their presence in MoMA, these chairs by Bellini showcase simplicity, craftsmanship, and beauty. This set includes six model 412 dining chairs.
 
The chairs are all in very good / excellent vintage condition and all marked underneath. 
 
Price is for the six chairs
 
Measurements:
Seat height: 44,5 cm
Height: 83 cm
Width: 48 cm
Depth: 45 cm