First! I am IMPRESSED! I searched all over for the information you gave me already. Thank you. Next, can't believe I didn't know to remove the cable guide to find more serial numbers. Kind of embarrassed! I'll download the complete serial numbers following this post, although I'm still not absolutely positive what one of the digits is. Apparently in 1998, they didn't have a machine to stamp the serial numbers legibly, lol. So about the "Texas State University Nutrition" decal. The guy I bought it from said his son raced for Texas State University Racing Team. I contacted TSU and asked for information, specifically, if they had a TANDEM Race Team, but haven't heard back from them. Their current website does show both a current road and mountain bike racing team, but not Tandem. If/when I hear back, I'll update you. If you can decipher the actual serial number from the pictures, please add it, so I can keep it for my records.