... it's getting harder and harder I can not say much on the basis of 2 photos, but ... it's not made for the 1989 season - the biggest "concentration" of frame production in 10th Anniversary "camo" occurred just around B6xxx, and that means the end of 1989 (certainly not 1988). Your frame, if it is really Team Stuttgart (which I can not confirm), was built for the 1990 season. The earliest (confirmed) frameworks of Stuttgart "camo" have the markings ~ B0xxx / 1xxx and they were built for the 1989 season.