[H] Valve Complete Pack [W] 25 Keys

Unknown package 29197 in my inventory, it's the Valve Complete Pack.
It Includes 25 items:
Counter-Strike,
Team Fortress Classic,
Day of Defeat,
Deathmatch Classic,
Half-Life: Opposing Force,
Ricochet, Half-Life,
Counter-Strike: Condition Zero,
Counter-Strike: Condition Zero Deleted Scenes,
Half-Life: Blue Shift,
Half-Life 2,
Counter-Strike: Source,
Half-Life: Source,
Day of Defeat: Source,
Half-Life 2: Deathmatch,
Half-Life 2: Lost Coast,
Half-Life Deathmatch: Source,
Half-Life 2: Episode One, Portal,
Half-Life 2: Episode Two,
Team Fortress 2,
Left 4 Dead,
Left 4 Dead 2,
Portal 2,
Counter-Strike: Global Offensive