Originally Posted by
Soupdaddy
I found a Nishiki prepossessed at a Goodwill drop off. I snatched it for $25 thinking about making a SS. But, upon further inspection the bike appears to be an all original Shimano 600 10 sp 1971 Custom Sport. The serial number is KI 16888. I would like to attach pics, but need 10 posts.
Welcome ot the forums. If it is a KI prefix on the serial number, then it was manufactured in 1979 and would be a 1979 or 1980 model. All the early 1970s Nishiki used a KS serial number prefix. The Nishiki brand didn't appear until the 1972 model year. Also, Shimano 600 wasn't introduced until 1975. Check post #2507 above. It shows a 1981 Custom Sport and the catalogue page from that year. Yours should look almost the same, except for possibly the colour.