Does anyone have any information on which Japanese framemaker made these bikes in the 1980s? I am fairly certain that they were imported and sold by an American company based in Seattle. I also think they were made to that company's designs and specs, (as was the case with brands like Centurion, Lotus, Nishiki etc...). I just can find any information on who made them. They seemed to have used primarily Tange tubing so I do not believe they were one of the many brands made by Miyata. Any information or thoughts would be greatly appreciated.
For pictures of my vintage Shogun go to the following link.