First, it will be useful to you to understand the following five terms in order to choose the correct chart for dating your amp: refers to the two-tone woven fabric that covered many early amplifiers.On early amps, this material was varnished to make it a more durable covering.Dating early Fender amplifiers is sometimes quite challenging.While dating Fender amps made before 1994 by serial number is all but impossible (as records of these numbers were never kept), all hope is not lost—the charts below should prove helpful in dating your Fender amp.Several different types, in vertical and diagonal weaves, were used.Please note that it’s quite difficult to precisely determine the production date of early Fender amps.The Fender serial number decoder currently supports all documented MIA, MIJ, MIM, MIK and MII formats with the exception of Custom Shop, Relic and Reissue instruments.
The last two digits refer to the week of the year (i.e., a “26” would mean the 26th week or, roughly, June).
This black-and-silver sticker contains several lines for “sign-offs” on completion of sound and electrical testing.
The final line contains a date code of two printed or handwritten letters denoting the amplifier’s production date by year (the first letter) and month (the second letter).
If you are unable to determine the approximate production year of your amplifier using the above charts, there are other means of dating Fender amps.
Several excellent books are available that contain reliable and invaluable information on the history of Fender amplifiers. To use these books most effectively, you’ll need to get the date codes from the speaker frames and potentiometers, and as much other detailed information as you can find about the specs and features of your amp.