Andre Duchossoir briefly discussed his findings for the 1972-80 codes in his excellent Telecaster and Stratocaster books. I used this information as the starting point for my research.
I examined and/or received information regarding stamped codes for about 150 Fenders made between 19. In most cases, the stamp was smudged beyond legibility or the stamps were incomplete. Some guitars simply had the model name, such as "MUSTANG" stamped on the butt end of the neck in green or red ink.
This means two things for the owner of a 1969-80 Fender.
A new serial-numbering scheme was adopted toward the end of 2009 using the number 10 as a prefix, followed by a space, followed by seven digits.The first two digits of the number identify the year of manufacture, (, , etc.).The following six digits are the unit identifier, although it should be noted that these final six numbers are not sequential and do not provide any other identification information about the instrument.These serial numbers did not identify the country of origin in the body of the number.Instead, the instrument’s country of origin appears on the decal on the back of the headstock, near the serial number.