The only way to definitively date That would be very helpful. There were periods of time when this was not consistently done, between 1973 and 1981and there are certainly other examples of short periods of time, and individual pieces, where the dating was simply omitted. Duchossoir the following information should help you but it is not guaranteed to be 100% accurate. The majority of Vintage Modified instruments are available only in right-handed configurations. In an effort to produce lower priced products, without having to utilize Fender Japan in the process, Fender built a second modern manufacturing facility in Ensenada, Baja California, Mexico, with the goal of being able to build quality instruments and offer them at more budget-oriented prices. The neck date simply refers to the date that the individual component was produced. But the stamper misread the order and thought that the number "1" was an "L" and so instead of plates starting with 100,000 they started with L00,000. Se