I have had a scan through the entries for the upcoming auction, and this absolutely stunning Suzuki SC 100 Whizzkid jumped out.
From its MOT in January:
Monitor and repair if necessary (advisories):
heavy corosion under vehicle
It's one of those where you would need to have a good look - some testers don't like lots of surface rust from standing. I'm not keen either, but it may not be rotten.
Of course, it's MOT exempt anyway.