They have been placed at the top of the neck plate, on the front of the headstock, on the back of the headstock, and on the back of the neck near where the neck bolts onto the body.
They were stamped on the back vibrato cover plate (early '55s Strats), and on the bridge plate between the pickup and the saddles on some Telecasters.
For the most part at this point, Fender made dating an easier concept by using a .
Fender announced in the 1966 catalog that the Stratocaster guitar.
Along with the new location a new series of serial numbers were instituted.
But once again, due to the modular nature of Fender's production methods, and the fact that most serial numbers schemes are not sequential and usually overlap from between 7 to 9 years, (from the early days of Fender, through to the mid 6985s), dating by the serial number is not an exact science.
Throughout the years, Fender has run many limited edition, reissue, and custom guitars.
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The main purpose for finding a serial number on your Fender Stratocaster is to discover its production details.