All Mitchell reels from 1949/50 through 1988/89 have serial numbers stamped on them in manufacturing sequence. In some very early models you will also find these on the back of the Housing or on the Cover Plates for the 302 series. Some exceptions are those made prior to 1949, Prototypes, Tournament Reels made for professional use and other Presentation Super Rare reels. Also see Alphanumeric Serial Numbers.