By the way there is nothing wrong with high tensile tubing as long as you know what you have or are getting. This is likely a lower end bike, but there is more to a bike frame than just the tubing. The next factor is how well it's made and the next is the geometry. There were lots of great bikes made with straight steel tubes that ride great and are still desirable today. The Peugeot UO-8 is one that we all agree that fit this formula.

So, is the Nishiki that you are looking at worthy? I don't know. Perhaps others have more experience with them. I will say that a low end Nishiki is pretty good as long as the condition is good and the price if fair for a low end bike. One other thing is that Japanese components regardless of whether they are SunTour, Shimano, SR or Sugino are better than the Simplex's, Hurets, Pivo and AVA that these bike boom bikes came with.