Using the serial number you can use the charts below to find the date when your machine was given a batch assignment at the factory.
If you do not find your machine serial number listed in the charts, then further in the text below will be more references and info.
Dating early Fender amplifiers is sometimes quite challenging.
While dating Fender amps made before 1994 by serial number is all but impossible (as records of these numbers were never kept), all hope is not lost—the charts below should prove helpful in dating your Fender amp.
But there are also more discerning services on offer.The first Featherweights batched in 1933 begin with the two-letter prefix 'AD'.