hey guys i have a nishiki bike, it has an 8 digit serial number CB929955. It be awesome if you guys could help me out because i cant seem to make the year or fabrication location of the bike, i want to sell it because i need the money for some college books, i dont know if its worth anything. I will attach some pictures thanks in advanced

P.S. Pardon my grammar and spelling as english is not my first language