Dating fender amps tube chart
These are usually in the form of a six-digit number with the following formatting scheme: The first three digits represent the manufacturer code, the next digit represents the year of production and the last two digits represent the week of production.Thus as an example 606452 is a transformer code: 606 tells us it is a Schumacher transformer made in either 1964 or 1974 and and it was built on the last week of December.
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.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.However it’s unlikely that the transformer found its way immediately into production, so it’s a pretty sure bet that the a 1975.It could be that another transformer reads 606602 which would make that component a 1976 make, thus the earliest the amp could be is a 1976.
Devin runs Doc's Music in Springfield, Missouri and his interest lies in the woodie and tweed Fender amps made from 1946 through 1960.