There is some mid 2000s Legend serial number information here:
https://forums.thepaceline.net/showt...+serial+number
Still looking for numbers closer to yours.
Here's a thread on #3136. Consensus was that it is probably built in 2000.
https://forums.thepaceline.net/showt...ht=1999+Legend
Guessing that yours would be 2001 or 2002. Fork and frame details might pin it down closer.