I believe it was made by Clarke's in the UK. There may have been other
makers. I often wonder if it would be possible to have it replicated by one
of these Far Eastern manufacturers who remake classic car and motorcycle
spares.
The most exotic cable I know of was made by GB. It came in several colours
and consisted of a nicely braided cloth liner with a clear vinyl outer
cover. Both over the steel inner of course. The Vinyl outer gave a depth to
the coloured braid and it looks most attractive. I have rebuilt a 1953
Gillott Taper Tube road/path with some in ivory . I only just had enough to
do the one bike.
Speaking of cables, for the older machines which used a bare round wire
coil spring control cable I have found the inner wire feed conduit from a
MIG welder to be a sutable looking replica. The fact is is made of stainlees
steel is a bonus. Ask for defunct conduits at your local car workshop or
welders.
TTFN. Mark Stevens. Dingwall Scotland.