My father just recently gave me his '86 Rolex Submariner with a Tiffany Dial. I have the original box, and the original sales receipt from Tiffany's, The problem I am having is, although I know it exists, I cannot find the original Rolex Certificate. Does anybody know if thas means that I am going to have a hard time with displaying provenance for this watch? Does anybody think that Tiffany's will be able to help me out with this matter? Any suggestions would be wonderful.