bordjon
CAGiversary!
Ok - so I was going through some stuff and found some old Half Life 2 discs and one had the serial number on the back of the disc sleeve. I remember buying this years ago. I don't think I have a steam account and don't remember ever using this serial but it's possible I did. So there is a *chance* it will work. First come first serve - post if you got it and it worked - I'm curious.
4ZX2E-IPJZH-XI2J7-4MX68-G3GHH
4ZX2E-IPJZH-XI2J7-4MX68-G3GHH