Dating your fender amp
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.
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All green boards and all black Tolex BJrs use the Fender Special Design, which is built by Eminence and is equivalent to the Eminence Legend 125.
This speaker has been used in the Hot Rod Deluxe, Blues Deluxe, Deluxe Reverb and the Twin Reverb, among others. It doesn’t have the deepest bass, however, and the highs can sometimes be “fizzy.” When the cream board tweeds were introduced, Fender chose the Jensen reissue (made in Italy) C12N.
2006 amps have a small metal “Fender 60th Anniversary” button on the back plate. Early Tweeds The early green board tweed-covered amps were not lacquered. It has the same cream board inside with the same components as every other current-production Blues Junior.
If you’re having difficulty dating and identifying your vintage Fender guitar then use the contact form on the right side of the page to send some pictures.
Fender introduced the Blues Junior in 1995, and has revised and updated it periodically since then.
The body is dated March 1956, has a very deep contour which makes it light and comfortable.
The original finish has lots of checking and wear on both sides, showing the beautiful figure in the wood.