4 x DSC Axis 106 Chairs by Giancarlo Piretti for Castelli 1960s

Fantastic Set of four DSC Axis 106 Stackable chairs for Castelli. 
The seats have been professionally reupholstered in a period dark green vinyl and sit on sturdy aluminium bases with tapered legs 
Stamped on frame: JSC Castelli Italy
These really are stunning chairs and would look great in most settings. The upholstery makes them even more usable and forgiving. 
Auction is for 4 chairs, however 8 are available. 
In very good vintage condition, with scuffs and marks on the metal however not retracting from look or usability