So if you have Fender with a neck date of 1964 and the pots are dated 1965, then you have a 1965 Fender Bass.There are some years in particular that can get real tricky.Given the modular nature of Fender's production techniques, an individual neck may have been produced in a given year, placed in the manufacturing warehouse and remained in stock for a period of time, and then subsequently paired with a body to create a complete guitar in the following year.
Potentiometer codes are pretty reliable for dating, usually indicating the year and week it was made. instrument production history, production dates have been applied to various components.There were periods of time when this was not consistently done, (between 19), and there are certainly other examples of short periods of time, and individual pieces, where the dating was simply omitted.All serial numbers now began with an "S" for seventies and then later an "E" for eighties, "N" for nineties and an "Z" for 2000 and later. The vintage reissue line which began in 1982 and continues to this day uses a separate serial number system as does the Fender Custom Shop models. You can actually send your serial number to Fender and they will give a pretty accurate date on when your bass was made, but again it won't be exact.In 1995 Fender moved the serial number to the back of the headstock for all U. If your determined to get the precise date locked down, you have to take all these factors into consideration and then still know that it's just always an approximation.Figuring out when a Fender Bass was made is not as easy as it sounds, especially if it's a vintage bass.