The Powell bike was built in '85, that's most of the information I got from an all too brief conversation with the man.
I didn't know that gear mech. was called a 'Jubilee', it just says 'Sachs Huret' but I always thought it looked a bit special. That mech's what came with the frame, I'm running a plain old 105 at the moment to use 8spd. cassette.
I've never ridden a TT before, but hope to try a couple of local ones this year & maybe meet someone who remembers the bike.