The Matsumoku bolt-through tailpiece was fitted to various Les Paul copies in the early 1970s, first appearings circa 1969/1970 through to the mid 1970s. The Matsumoku facility produced guitars for export around the world, and this tailpiece appeared on guitars branded: Jedson (4444) - and many more. Avilable with either gold or chrome plating.
It is not 100% clear who manufactured this part. Although widely used in Matsumoku instruments, it may have been supplied by a third party manufacturer. It has no identifying features beyond its dimensions: length: 97.8mm, width: 16.0mm, height: 10.0mm (5.0mm for the arms). The raised section has a length of 60.2mm. Post hole centre to centre 80mm. Posts: total length 35.3mm, metric M8 thread. Weight: 86g.
This tailpiece has a lot of similarities to the (more widely used, and more accurate) hook on version fitted to numerous other Matsumoku guitars (see this Shaftesbury 3400 for example). In fact the two are interchangeable, and it is not really clear why both would exist and be used at the same time. Perhaps this was less expensive to produce? One notable difference, however, is the mounting bolts required to install this tailpiece. And of course, this variation will not fall off when restringing the guitar!
List of Matsumoku bridges / tailpieces / tremolos
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