Hey, a friend of mine gave me a road bike that belonged to one of his parents and was used to commute in college. I'm trying to ID it. It has Lotus badging and on the top tube it says 'Unique'. On the seat tube it reads 'Champion #5'. I will go and look at the bike later to find any other markings. Those are off of memory. It has a Shimano 600 group with Dia-Compe brakes. Any information would be greatly appreciated.