HalfLife 2 (CE) - How many inserts were in the dvd case?

[HN]

finally got around to picking up HL2.
popped open the dvd case and saw the serial key printed on the insert.
pulled out the insert to have a closer look and found i have 3 of them.
is this normal or do i now have 3 unique keys?

 

[HN]

someone else out there must have bought retail

 

[Elcs]

I got 1 sheet of paper labelled "Half Life 2 Quick Reference Card"

My 1 DVD

The serial was on a sticker, stuck on the inside of the case.

 

[HN]

thanks elcs.
I think i'll just store these other two away for safe keeping