I just bought a vintage Nishiki on Craigslist free section. I talked him down to zero.
I never heard of it so I joined this forum because of it to research.
I didn't even consider it being worth anything. I saw one like it on eBay for $700 shipped.
So now I'm considering flipping it. I'm amazed at how well it still rides. My son and I went for a ride earlier through Denver and I smoked his $200 Schwinn Copeland.