Hey Guys, I finally managed to pick up this Carrera Calibre 5 from 2004. The watch came with service papers, box and guarantee cards. It has been completely overhauled in 2012 and had a polishing in 2009. My only concern is the lack of a serial number on the back of the watch. Perhaps it was polished off/Any help would be appreciated! The service papers indicate a specific serial number.