Dating fender amplifiers by serial number

10-Apr-2019 12:56

Fender introduced the Blues Junior in 1995 and has revised and updated the amp periodically since then.

The 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 codes can be handwritten, which can occasionally make the letters hard to decipher. There is no reliable way to date 2003–2005 amps other than to ask Fender customer support to look up the date from the serial number.

Amps made in 2006 have a small metal "Fender 60th Anniversary" button on the back plate. In 2010 Fender updated their line of hot rod model amps and released the "Blues Junior III," adding many physical changes to the standard black tolex model.

The new Fender did not acquire any physical assets of the old company, just the name "Fender".

Hence during 1985 to 1987, production of Fender guitars was only done in Japan, while USA Fender created a new factory in California. BUT note that the "E" and "N" series does sometimes appear on "made in Japan" models. In any case, if it says "made in Japan", then it is... Fender has recently (in the last 20 years) introduced LOTS of different serial numbers schemes, depending on the country the Fender was made (USA, Mexico, Japan, Korea, etc). Sorry, since I do not collect new Fenders, I don't really keep track of these things.

The serial numbers do not reflect this change - Fender continued to make instruments using existing serial number schemes.

The switch to the cream-colored boards reflects the change in where the amps were manufactured, from USA to Mexico.

The cream-colored board is laid out entirely differently from the green board. The older amps tend to sound darker, while the new ones are brighter with more emphasis on treble tones.

Notable differences include the Fender "lightning bolt" speaker, "sparkle" circuit modification, rattle-reducing shock absorbers, set-screw "chicken head" knobs, "dog bone" handle, larger Fender jewel light, black non-reflective control panel, and "Blues Junior" subtext on the logo plate.

A set of three matched Groove Tubes 12AX7 preamp tubes and two matched Groove Tubes EL84 power tubes, graded according to Fender's specifications, are used in all factory Blues Juniors.

The serial numbers do not reflect this change - Fender continued to make instruments using existing serial number schemes.The switch to the cream-colored boards reflects the change in where the amps were manufactured, from USA to Mexico.The cream-colored board is laid out entirely differently from the green board. The older amps tend to sound darker, while the new ones are brighter with more emphasis on treble tones.Notable differences include the Fender "lightning bolt" speaker, "sparkle" circuit modification, rattle-reducing shock absorbers, set-screw "chicken head" knobs, "dog bone" handle, larger Fender jewel light, black non-reflective control panel, and "Blues Junior" subtext on the logo plate.A set of three matched Groove Tubes 12AX7 preamp tubes and two matched Groove Tubes EL84 power tubes, graded according to Fender's specifications, are used in all factory Blues Juniors.(the one in question is s/n 0073) My best guess is that it's 1994... You probably won't end up with a "birthday", though... Welllllllllll ok is there some way other then writing to fender to date this thing (pluueeze no witty jokes, I am married, and my wife would not understand). Anybody know at least where to point me to find out when this puppy was made, aside from maybe looking at the tone caps,??