Read what nLerner states as well as TimJ. I have'nt looked at the recomended sight,I don't need to. Your Nishiki, the one that i'm SURE in on e-bay,everything is e-bay related here, is made from Japanse CHRMLY tubing'd main triangle. 4130, Tange, ishi, MIY, 520,531.631 on and on is chromalloy,spell it as you want.One member mentioned Magnese, GOOD point,it's not that,that is a Reynolds TYPE of chromalloy.. It has no chromium,more magnesium instead,as well as silicone,steel etc. Reynelds made 753 'till recently. 753 was the mag. type. Your bike is NOT high tensile,the fork will say 1024,1024 is technically a high-tens. steel. DO bear in mind that the difference between 1024 and 1020 reynolds and CRMLOY is just a few molecules. Nishiki sold that bike for 3 to 4 bills,maybe(probably) more,depending on the year.I road saw, and worked in a store that sold dozens of Nishikis,this co. was involved in Holland and other Euro. nations bfore and after it was in the USA.