I have a 1986 Centurion Dave Scott Ironman. It has the oh so lovely purple and yellow on a lugged Tange 1 frame. Serial # is N6M67**. The saddle and stem have been replaced, otherwise it is all original. Shimano 105 all the way around. Wolber 700c rims with 105 hubs.
It is really quite a nice bike. Quite smooth and fast.
j