I have a fully rigid Wicked Fat Chance that I bought used in 1994. I never thought too much about what the serial number meant. Now, after a 15 year hiatus, I'm riding it again and would like to know the age of the bike. The serial number is 652W18. I'm assuming the "W" stands for Wicked and the "18" stands for 18 inches. Does this sound correct? Can I determine when the build date was from the number? I believe it is from an early production run because it has simple decals over its "Wicked Yellow" paint job. Any info would be appreciated.