The Code on the tube chart of your Fender Amp is made up of two letters. The First letter equates to the Year and the Second letter to the Month. Reissue amps also use stamped Date Codes. Examples of "Hand Stamped" Date Codes. The source-date code on a pot is a 6 or 7 digit code impressed into the casing of the potentiometer.
How to Date a Fender Bassman Amplifier | Our Pastimes
Fender Tube amp codes: - look for a 2 letter code stamped on the tube chart inside the back of the amp - the first letter is the year, and the second letter is the month. An amp stamped NA would have been made in Jan. Here is a list of the first letter showing the year of manufacture. These codes have nothing to do with the serial number that is stamped on the right rear of the chassis - Those numbers are posted below.
This article outlines how to establish the date of manufacture for a Fender Twin Reverb amplifier. Check the faceplate. Amps from the blackface era, which have a black faceplate, were manufactured from to Amps from the silverface era, which have a silver faceplate, were manufactured from to
I promise the tables will still be there after you finish reading. We also received a report of a tweed 5G12 Concert. The 5G12 Concert is the earliest version from very late and early so the existence of a tweed example, while extremely rare, is certainly plausible since Fender was making lots of tweed amps during the same time period. Working at FMI — I was able to interview a fellow who wishes to remain anonymous who worked at Fender in in the amp department.