Bike was missing when I returned from work. Had an older lock that obviously didn't do its job. Have record of bike purchase from REI in 2006, but no Serial Number. REI does not have the number either since they only keep it for 4 years or so.
Protect your bike – get a security protection label!
Apply the protection label to your bicycle and instantly reduce the risk of theft by up to 50%! Moreover, if the bike is stolen, you increase the chance of its safe recovery by up to 70%.