I've got the Muddy Fox Pathfinder I bought from new back in 1985, complete with original receipt. Bone original still on original tyres and excellent condition. In 2 minds whether to let it go (I need the space but don'y think I'd get much for it and its of sentimental value - blew my student grant on it!!). Not sure what price these fetch now.
Funny how radical they looked then but now look like they're built by B&Q