panton chair original?  

If they are Vitra chairs
then they are polystyrene, according to the information previously posted in this thread. Chemical paint stripper will melt certain plastics so be very careful about how you go about removing the paint.

Hmmm
It looks like some indications of fibers are visible in some of the photos, so they may be fiberglass reinforced. In any case, the paint should be removed with care, as noted.

fabric of panton chair
hmm, I thought polyester was white? these are dark orange-brown. I am sure that they were originally painted white because you can still see the impression of the sticker underneath the seat. on 2 chairs you can even read "herman miller production". the chairs weigh 7.5Kg.
under the seat it seems to be reinforced because where there is no paint you see the same 'fabric' but lighter
so far, I will certainly not paint the chairs and see what is best. isn't it a shame to repaint them so you can not see the stickers anymore? wil it not lose it's authenticity en value IF IT'S EVEN WORTH SOMETHING IN THIS STATE?
I have put some details of the seats in poorer condition on flickr for a clearer picture of the fabric. thanks for your help! I am new to this forum. I'm from belgium.
http://www.flickr.com/photos/80205037@N05/7368996560/in/photostream/

Panton chair - please help recognizing if fake or original
Hi, i read through all posts here, but I still need some advice please. Found in a second hand store a used panton chair for 30?, they say somebody just got it home and now is moving so is selling stuff. The chair has no marks on it, is quite heavy and has reinforcing ribs (4 or 5 pieces) underneath. Could it be some kind of ripp of, a fake one, or is it one of the older pieces?
Thank you very much for your help.

This is so helpful. Do you know what the ribs on the 1971-79 Vitra chairs looked like? Was it like this?

Or did the ribs look like this?

Hi. I wasn't sure where to post a question. I bought 4 chairs and a table that matches. No imprinted name anywhere. Are these Panton?