Are you still interested in collecting Nishiki Competition Serial Numbers for your Data Base? If you are, I have had My Nishiki Comp since I bought it new during my College years. It has never left my procession in the 46 years I have had it!!! It was bought in Pennsylvania and the Serial number is: S179724 and there is a big W below and in the middle of the Serial number. Please let me know what your thoughts are about this Serial number, and, if my Nishiki Competition was built in 1972 or 1973!!! Thank You in advance!!!