A listing on eBay for a clemence Kelly has triggered my question about darkening handles. The auction link is: eBay: 100% Authentic Hermes "KELLY 35cm" Light Brown Bag NR (item 190030872218 end time Oct-08-06 21:00:00 PDT) After seeing this, I got a little concerned that my Potiron clemence Birkin will eventually succumb to this..ush: I mean, the seller has told us how often she's used the bag and going by the blindstamp, her bag is 26yrs old. But has anyone encountered this with their bags, maybe not to this extent but some darkening? Which leathers do you have? I suppose the natural leathers like Barenia will tend to do this more? What is the heirarchy of leathers in terms of susceptibility?