Stackable chair '40/4' with steel back/seat and chromed frame by David Rowland for GF Business Equipment/Howe (ca. 1960). The 40/4 chair by David Rowland is acclaimed as the first truly stackable chair. Its name is an expression of this fact: 40 chairs can be stacked within 4 feet. The chairs could be joined to each other according to your needs and space. 

 
There are some small scratches and stains. Dusty, needs to be cleaned. Colour and state may vary. Glides might be missing or used. Finish may be chipped.