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The neck with the serial number A2357D R seems rather unique, and Dan informed me that ' any serial number followed by the letter R was a reject much like a Gibson factory second. Apparently anything prior to A100D was some kind of prototype, or was made at a time prior to the actual production line. Using this information, the guitar neck numbered A204D is actually the 104 th guitar off the standard production line. The serial numbers always ran consecutively, and according to Dan the actual production models ' began with number 100.' It is stamped into the bass side of the neck in a black ink or dye and once the instrument has been strapped on, or otherwise held in the playing position, one can easily see the number by merely looking straight down and through the clear acrylic body and onto this portion of the neck. As seen upper left & right, the base of the neck is also where the instruments serial numbers can be found.
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