Dating early fender amplifiers
First, it will be useful to you to understand the following five terms in order to choose the correct chart for dating your amp: Silverface, Blackface and Brownface are slang terms used to identify Fender amplifiers based on the color of the control panel (these terms are often misconstrued to refer to the color of the grille cloth).
Tolex is the textured vinyl material that covers the amp; offered in many different colors and textures over the years.
Tweed 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.
If four digits are present, the first two digits refer to the year (i.e., a “66” would mean 1966).
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.
Usually, I get no response to the request for additional information concerning that date code or transformer number.
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).