My mom brought it up to me and I haven't talked to my aunt yet to get some details about where she acquired it. Basically all I've been able to get from Google is that Shimano never made bikes. The lugs are much more detailed than most I've seen. The serial # on the bottom bracket has a symbol that I believe is Japanese for 'vehicle'. The front derailleur mount is brazed or welded instead of the common for the time (79) clamp style. And it's decked out with all Dura-Ace components, except for the pedals which are 105s…
by whoisdonwhang