I just purchased a preowned two tone quartz cartier santos demoiselle. The watch was made after 2009 but other than that I don’t know the year of production. It’s no longer being made by Cartier and there were not many available online. I ordered from a shop which sells directly and also sells on ebay and chrono24. However, I know he acquired the watch from another vendor, it wasn’t in his possession until I placed the order. I ordered through ebay for an extra layer of protection versus ordering directly from the dealer. It was authenticated by ebay authenticators, but I don’t have much faith in ebay authentication. The watch appears to be in great condition other than a minor scratch. However, I noticed that the sides of the gold links on the band appear to be tarnished which you can only see if you bend the band so that the sides of the links are exposed. Has anyone experienced that with a gold Cartier watch? I plan to take it to Cartier for servicing, but I want to know if the tarnishing is a huge red flag. There is a 30 day return policy so I still have some time. Also, I don’t think he would intentionally sell a fake watch but its possible he was deceived also. I also noticed that the serial number on the case isn’t in perfect alignment which scared me but I checked the serial number alignment on the Cartier TF that I purchased from an AD and it’s also not in perfect alignment so that doesn’t help me much. I guess I wont know until I take it to Cartier but im just curious about the tarnishing.