Hi, I have just removed these from my C4, they don't appear to have any branding on them, stainless steel although pretty grubby they will clean up nicely I'm sure. Sound wise is totally stock, the tail pipes are OEM but welded on to the exhaust. I don't know the history or age but they are nice looking and were working perfectly before I decided to swap them for a valved system Looking for £200. I have had to cut the bracket as shown in the photos so something would need to be done to reinstate that side hanger. I can take some more shots for those interested. Postage can be organised for £25