Dating fender blues jr amps

23 Feb

Dating Fender Tube Amps By Serial Number, Part 2 by Greg Gagliano Copyright 1997, 20th Century Guitar Magazine.It's been about 6 months since Part 1 of this series was printed so I thought it would be a good time to give an update on the Fender amp research that I am doing along with Devin Riebe and Greg Huntington.The biggest tip off would be the control panels which brings us to interesting factoid #2.After CBS bought Fender in January 1965, there were still plenty of control panels for various models that were in stock.New panels made after the CBS acquisition were used beginning in April 1965 and say "Fender Musical Instruments." So, if you have January 1965 amp, it will have a Fender Electric Instruments panel whereas a January 1966 amp (even though it has that green "OA" date stamp) will have Fender Musical Instruments. Although the database doesn't have thousands upon thousands of entries, we are seeing some interesting patterns emerging that will help date amps by serial number. The early amps (woodie and tweed) had serial numbers handwritten on the tube chart.

In the fall of 1965, Fender switched from stamping these numbers in black ink, to dark green ink.

If anyone has an amp with a "PA" stamp, please let us know.

Still, I wouldn't be too quick to just glance at that tube chart and accept an "OA" as a January 1965 amp.

Likewise, the brown/blonde Tremolux, Concert, Vibrasonic, Twin, Pro, Super, Vibrolux, Showman, Dual Showman, and Bandmaster used a sequential numbering independent of model, but as with Fender guitars, these were not used consecutively. The 1956 to 1963 Champ, Harvard, Princeton, Deluxe; the 1956 to 1960 Vibrolux, the 1956 to 1964 Bassman, and all the tube reverb units have their own serialization scheme.

The Champ has a "C" prefix, the Harvard an "H" prefix, the Princeton a "P" prefix, the Vibrolux a "F" prefix, and the Deluxe a "D" prefix.