Robin Day Stacking Chairs

I worked in an art gallery which featured photographs of Boots (the British Chemist) staff rooms between the 60s and 80s. In each scene, these plastic chairs appeared. I couldn't find the exact model but I did scour the internet and came across some chairs being sold on ebay that look very similar. The seller said that the chairs for sale were designed by Robin Day, a name familiar to anyone interested in mid century furniture design.

From my searching, it is not clear exactly who designed the chairs found in these 1960s-1980s staff room scenes but I doubt it was Robin Day (correct me if I am mistaken). Overall, it doesn't really matter; through this I have come to research Robin Day and think more about celebrating objects that don't seem noteworthy.

I doubt a chair such as this would have been much more than a practical object to most people, but now similar styles can be found priced as if they are desirable pieces. Of course original 1960s chairs will carry value just for being from the period. Are these chairs worthy of our attention? I think furniture that becomes widely used has a certain attractiveness even when it is slightly ugly. When I look at these chairs I am reminded of that textured plastic which gets stained and worn over the years, engrained with paint and pen marks. I remember the feeling of it from school.

On the other hand I would love a few white polyprop chairs as pictured above around a dining table, or sitting in the corner of a room. The ones with black legs are especially nice I think. The insect-like bend in the front leg sets these stacking chairs apart.

However, maybe I just want to like them because I know they are expensive. Maybe I am drawn to them because I get a kick out of liking things that other people overlook, so I can say "well, actually that piece was designed by Robin Day, a legend of his time". What do you think?