Dating my fender amp
Blues Junior history can be divided into two major categories: the early amps with green circuit boards and the later ones with cream-colored boards.
The cream-colored board is laid out entirely differently (and better) than the green board. But the old ones sound darker, while the new ones are brighter, with more emphasis on treble tones.
The serial numbers for these amps begin with “LO,” indicating that they were made in the Fender/Sunn Lake Oswego factory. It usually applies to old vacuum tubes/valves that have gone unsold for decades. All cream board tweed Blues Juniors have a “Limited Edition” plaque on the back.
The NOS Blues Junior is a current production, lacquered tweed amp with a Jensen reissue C12N speaker. There’s nothing limited about the edition; they built a bunch and when they ran out, they built another bunch.
The chassis can also be found in the weird, plastic-cased Deco-Tone and in some Custom Shop amps with exotic wood cases such as bubinga. MADE FENDER STRINGED INSTRUMENT For the majority of Fender's U. instrument production history, production dates have been applied to various components.While this neck dating is useful in roughly determining the age of a guitar, it is certainly not definitive.The neck date simply refers to the date that the individual component was produced.Given the modular nature of Fender's production techniques, an individual neck may have been produced in a given year, placed in the manufacturing warehouse and remained in stock for a period of time, and then subsequently paired with a body to create a complete guitar in the following year.