Vintage fender amp dating
The original Fender amps were tube-powered and the company also started producing solid-state models in the late 1960s.
Lots of different speakers were used in the blackface and silverface era Fender amps.
Even at we struggle with keeping a correct amp and speaker model overview.
There are also exceptions to the rules where Fender delivered non-standard speakers in special orders, Christmas campaigns etc. See our Buyer’s guide to vintage Fender amps for a guide and picture gallery of the known original speakers in the blackface and silverface amps.
The first letter is the year and the second letter is the month. If the tube chart is not in the amp or has been torn or damaged and you cannot read the ink stamped letters you can date the amp by the codes on the potentiometers.
Below is a chart of the manufacturing codes for potentiometers.
They included the Model 26 Deluxe, the Princeton, and the Professional.