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.
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.Remember that this is when the transformer was manufactured.However it’s unlikely that the transformer found its way immediately into production, so it’s a pretty sure bet that the a 1975.Cabinet Sticker By far the most reliable way to date your amp is to look for the month/date code stamped on the tube layout sticker on the inside of the cabinet.A00100 to A02000 – 1964 A01200 to A08100 – 1965 A08100 to A17000 – 1966 A16000 to A21000 – 1967 A20000 to A26000 – 1968 A25000 to A28000 – 1969 A28000 to A29000 – 1970 A29000 to A32000 – 1971 A32000 to A35000 – 1972 A33000 to A39000 – 1973 A39000 to A42000 – 1974 A42000 to A51000 – 1975 A51000 to A53000 – 1976 Export models had serial numbers that started with a “B” rather than with an “A”.
Okay, I know you’re all just dying to skip ahead to the serial number tables but try to contain your excitement and read through the article first.