On some Telecasters at the bridge between the pickup and the saddles. PAT, 2,573,254 2,968,204 3,143,028 2,976,704 2,573,254 for pickup and bridge combination.
Where to find the serial number The serial numbers on the guitar are provided through the years on various places.Although there have been periods in which major changes occurred as the acquisition of Fender by CBS, and the transition from CBS Fender to the current owner (Fender Musical Instruments Corporation), most models are in general not changed.At the Stratocasters from the early fifties the serial numbers were stamped on the back vibrato cover.3,143,028 the patent granted in August 1964 for Fender's adjustable neck construction. (Used since 1957 to the Precision Bass) The DES is the serial number. The serial number for these three models can be found at the bridge plate and is used until about early 1954. Until 1955, the serial number is applied to the bridge plate.Fender then switched to a serial numbering on the neck plate for all models. Although Fender had already switched in 1954 serialized for all models on the neck plate, is the serial number at some Precison's still affixed to the bridge plate.