In the 1971-72 Dallas Arbiter catalogue the Jet Guitar outfit (guitar, lead and case) is listed at £66.33 - part of the Jedson Special range with a matching Jet bass 4445.
Available specifications for this guitar are fairly limited, with little information published by Dallas Arbiter, Matsumoku, or indeed the other distributors that sold (effectively) the same model. The fretboard is rosewood, but the body and neck woods are currently unknow.
The Jedson Jet model 4444 was described as follows in the 71/72 Dallas Arbiter catalogue
Incorporates two high sensitivity, gold plated pickups, each with separate volume and tone controls plus toggle pick up selection switch for further tonal variation. Fast, low action neck with fine tuning gold plated machine heads. Micro gold plated bridge provides height adjustment and individual bridge saddle. Jet black gloss finish plus white purfling edges, lead and the outfit includes carrying case.
This guitar is fitted with a Gibson-style stop tailpiece and HTF bridge - both gold plated.
The earliest examples of the Shaftesbury 3400 (most likely all Matsumoku Les Pauls) were fitted with pickups with just two height adjustment screws. In very late 1970 or very early 1971 this changed to three, as seen here. This allows adjustment of pickup angle as well as height, and is a feature of most Matsumoku Gibson-copies throughout the decade: Les Pauls, SGs, Flying Vs etc; aswell as some Epiphone guitars: EA-255, ET-290 etc - effectively all guitars using these pickups.
The neck plate of Matsumoku guitars of this period typically contains the text (in larger font) "STEEL ADJUSTABLE NECK", sometimes "MADE IN JAPAN" and a seven digit serial number.
Just about all Matsumoku guitars of the late 1960s and early 1970s were equipped with the same metal-capped Matsumoku control knobs; gold to match the other hardware.
The headstock has five-ply binding and a pearl "Shaftesbury" logo. Some early examples of the 3400 had a larger logo filling the entire width of the headstock. Note the "open-book" headstock profile - this is still some years before the famous Gibson lawsuit which defined headstock shape as a protected Gibson feature.
The two-ply truss rod cover is the same size as fitted to other Matsumoku guitars of the time: 54mm x 32mm.
Gold plated tuning keys. The original Rose-Morris model code / serial number label is still present. Whilst the Matsumoku serial number on the neckplate (above) was allocated during the guitars production in Japan, this label will have been applied by Rose-Morris in the UK. The serial number is 71073: all guitars examined to date start with numbers 70 or 71; it is tempting to believe that this relates to a year, with this guitar being the 73rd instrument of 1971. Although conjecture at this stage, this theory does, so far, seem to fit.
The real mother-of-pearl Shaftesbury logo has flashes of green and pink that do not appear well in photographs, but set the Shafesbury 3400 above some other equivalent models (such as the Jedson 4444 Jet with silk-screen logo or Aria 5522 with headstock badge).
Extra content on this guitar is included in our Supporting Members area here
£195
£295