Glad to hear you got it, and at a good price to boot. It's definitely a 1986 Dave Scott Ironman. While the the components are upgraded over the Expert of only one year later, you might be suprised to hear that it actually cost less, at $499 US. Also while the tubing decal states Tange #1, it is actually a "custom mix" of #1 and #2 tubing. FYI, saddle, bar tape, pedals and cogs are replacements. It also looks like the lever hoods may have been replaced. By the way, Dia-Compe levers are original, despite the brakes being Shimano New 600EX.

It's always nice to go into negotiation fully armed. Some of the sellers I've dealt with have almost wet themselves by over how accurately I can determine the history of their bicycle based on it's condition and details, and how thoroughly I go over them.