The following chart, was originally printed in VG magazine, by Gerald Weber.If you see any data that is not listed here or notice any errors, for 1970’s and earlier Fender amps, please send us an email and we will update the chart.Our Buyer’s guide to vintage Fender amps explains in detail how you can date your amp by looking at serial numbers, tube charts, transformer codes, speaker codes, Fender logo, etc.
Electronic components such as transformers, potentiometers, speakers, and some capacitors are often stamped with a date code, which indicates the manufacturer and the manufacturing date.The code follows the format: = a number from 1 - 52 indicating the week of manufacture.Remember, your amp is newer than the newest component.For example, if you find pots from late ‘64 and transformers from early ’65, you can be pretty sure your amp is a 1965.Comments: In August 1967, Fender changed the cosmetics once again, this time to the silverface style. ’67 to July ’68) had aluminum grill trim, black vertical lines on the control panel, and a highly textured version of the famous silver/blue sparkle grill cloth.
In addition, the speaker cabinet was enlarged and ported.
In June 1968, the Bandmaster was given the infamous AC568 silverface circuit.
The amp shown here is one of the very last silverface Bandmasters produced with the blackface AB763 circuit.
In a BF Vibrolux Reverbs you could have either Jensen, CTS or Oxford, the BF Super Reverbs had Jensen, CTS, Oxford or sometimes JBL, the BF Pro Reverb had Jensen, Oxford or Utah, ++.
In the silverface era Eminence, Oxford, Utah and Rola were more often used and Jensen was phased out.
Even at we struggle with keeping a correct amp and speaker model overview.