Gibson bass bar bridge - underside viewGibson / Epiphone bass bar bridge - first version. Part number BR-655N. Nickel. Notice the straight, thin mounting arms. Although the strings can not be intonated individually, the whole bridge could be moved slightly, with adjustment of either of the hex-screws perpendicular to the bridge posts. As used on the Gibson EB, EB0, EB2, EB3, and Epiphone Newport and Rivoli basses up until 1965 | 
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