I am considering buying a new Oris from a person who has a stamped warranty card that is undated. My question is not related to how I can screw Oris and have an infinite warranty, as many posts seem to go into on the warranty card topic. My question is whether or not Oris will have a record of the original sale, nullifying my warranty since I don't have the original sales date. I know companies like Rolex have those records. What about Oris?