Nishiki Seral touring bike. serial KC 23779. That would indicate a US model made in 1983. I checked the dates on the crank, stem, and front derailleur which I believe to be original and they all indicate 1983 as well. Specs are: Tange double butted Chrome moly with Suntour dropouts, Tange fork, Sugino AT triple crank, Dia Compe cantis and non-aero brake levers, and Suntour shifters and derailleurs (front is Cyclone Mk.II, rear was not original). The wheelset was Suntour 'sealed' bearing hubs laced to 27" aluminum rims.
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