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 "10" prefix was designed to identify the first year of the second decade of the new millennium, and while it appears on the instrument decals, it was not captured in Fender's operating system. Only the seven-digit suffixes were actually entered into the database. 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.
This new numbering scheme was short-lived and was replaced only a few months later by an improved scheme that identifies an instrument's country of origin and year of manufacture in the body of the serial number.
This new scheme uses the letters "US" as a prefix to designate an instrument made in the United States, followed by an eight-digit number. The first two digits of the number identify the year of manufacture, (10 for 2010, 11 for 2011, 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. This new scheme is now used on the majority of U.S.-made Fender instruments, with exceptions including the American Vintage series and certain special-run instruments. Instruments Product Dating Fender Support