So, they ordered neckplates that were supposed to have numbers above 100,000.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. But it took a while to manufacture and number the plates.Dating a Fender guitar with the serial number is a hit or miss propisition.It helps narrow things down, but in most cases is an inexact science.The serial numbers do not reflect this change – Fender continued to make instruments using existing serial number schemes.The new Fender (FMIC) did not acquire any physical assets of the old company, just the name “Fender” and the rights to all products and trademarks .At least not while he was at Fender Musical Instrument Corporation.
A CBS-Owned Fender selected a Japanese guitar manufacturer to make official “Fenders” — but made at a less expensive price — in Japan.
Double stamped serial number plates were also produced (number on both front and back of the neck plate) in late 1957 to early 1959.
Unfortunately, there is also some overlap in serial numbers between years — again due to the fact that neckplates were re-ordered various times from various manufacturers.
The serial number can only generalized the age of the instrument within a few years.
In mid-1954 Fender changed the location of serial numbers to the neckplate. Because different companies did the stamping of the serial numbers on neckplates they vary in location and layout.
But you can also imagine that there were many times for inventory purposes when suppliers, vendors, and etc.