An old Colnago road bike? Dumped at the side of the road? Maybe, maybe not… It was covered in dirt, the tyres were old and cracked and flat, ancient Suntour ten-speed derailleur. Obviously stolen and dumped… but maybe stolen a long time ago! On closer inspection the mystery deepens; firstly, the Colnago stickers don’t look quite right, they’ve faded and aren’t square on the frame, it also seems to weigh a ton. Then I had a look for the serial number — it’s been filed or ground off. The paintwork looks badly applied, and running a thumbnail over it makes it flake off, revealing a metallic red underneath. Just what is it?