New info, good news
I have been in touch with Helmut at Sonic who has in turn sent an email to a guy called Owen who made the frame for himself.
Here's the reply,
yeah, i gave the frame to my old neighbour. unfortunately i couldn't fit it in the container when i moved to plymouth, so it really was an act of desperation. my understanding is that one or two of the cable stops need replacing - it sat outside my flat for a few years and the sea air got to it a bit.
it actually does have a frame number, which is saus1 - as in sausage - it's well hiden. it was one of the last frames you built - columbus nevachrome main triangle with SL stays, and with 753 fork blades, and long shen 300 series arrow head lugs ... and an lc15 fork crown. sweet little criterion frame set. painted by vas - chocolate brown tubes, black lugs with gold lining.
as for age..........hmmmmm, when did you open that shop of regents park? i'd say it was about at least 6 months before that.
I'm waiting on a reply for the date the shop opened
I think we can safely say that 'saus1' is pretty unique
The older I get the faster I used to be......