Not quite a C5, but have decided to resell my Zeta powered BSA bicycle:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=121132666033 (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=121132666033)
With a house move coming up ( and work needed once we've moved in ), and other projects, it was just going to sit in the garage, so thought i'd see if anyone else wants it.
Even though it's on ebay, if someone here would like it, let me know a price ( not expecting loads ) and i'm sure we can sort something out :)
Where abouts are you?
I'm in Sawtry, which is between Peterborough and Huntingdon on the A1.