Dating fender amp serial number
They have been placed at the top of the neck plate, on the front of the headstock, on the back of the headstock, and on the back of the neck near where the neck bolts onto the body.
They were stamped on the back vibrato cover plate (early '50s Strats), and on the bridge plate between the pickup and the saddles on some Telecasters.
The only way to try to narrow the date range of your specific instrument would be to remove the neck and check the butt end of the heel of the neck for a production date, which may be stamped or written there.
The early series are the most popular for collectors.
Also, some The Japanese serial number can be confusing too.
As you look at these serial numbers, please note that the same “letter-prefix” on the serial numbers are used for two different sets of dates. AND now Japan as started making the MADE IN JAPAN guitars again and using old serial numbers.
The first being the “Made in Japan” date and the second is the “Crafted in Japan” date. In another 5 years there is going to be sooo much confusion, it will not ne funny!