For instance, many of the MIJ/CIJ Telecasters have the serial number on the bridge and they start with an "A".
Yet if you take the neck off they can be 1994-1997!
Fender's production methods from the early fifties had the effect the numbers may not be consecutive.
Also overlap of serial numbers and dates come with regularity.
Most of the “Made in Japan” and the “Crafted in Japan” guitars us a 6 digit number (But not all and excluding the A prefix! A 6 DIGITS 1985-1987, 1997-1998 (Made in Japan) and (Crafted in Japan) This was one of the most confusing serial uber used by Japan.