Set of 6 " Coquillage" chairs by Pierre Guariche for Meurop

Set of 6 (Your Choice from 8!)  by the famous French designer, Pierre Guariche. 
If I’m not mistaken, they were originally designed for laundromats. 
Details to note:
The red chair has different screws (see photo): white plastic,.
The black chair stands out with a silver  base.
Two blue chairs are missing one rivet each (no impact on strength, easy to fix.) 
A quick clean and they’re ready to shine  or keep the “patina” and let the age show with pride.
So… which 6 will you choose?