These promo items were apparently sent out to specific websites in 2008 for the launch of GTA: IV.
This is an authentic Grenade that has been de-milled (deactivated).
Software Development Manuals for Playstation 2
GTA IV Key to Liberty City – Won by by completing the game 100% within 3 weeks of it being released.
Johnny Cage’s Sunglasses – Official Movie Mortal Kombat Promotional
Teenage Mutant Ninja Turtles NES Smartboy Cartridge – Smartboy games were made for Rental only.
Sealed Atari 2600 Xonox Double Enders