I bought a sealed dualshock 3 and it's genuine (tested with MGS HD collection) so I figured maybe it can help you as a reference when looking for original ones online :
For PS3 Wireless DualShock 3 Controller Joystick GamePad for PlayStation 3 UK | eBay
Amazon.com: PlayStation 3 Dualshock 3 Wireless Controller (Black) : Video Games
PS3 dualshock 3 controller BRAND NEW, SEALED PlayStation Gaming Computer | eBay
Buy Sony DualShock 3 from £109.09 (Today) – Best Deals on idealo.co.uk
Buy Sony DualShock 3 from £109.09 (Today) – Best Deals on idealo.co.uk
PlayStation PS3 Dualshock 3 Wireless Controller (Black) : Amazon.co.uk: PC & Video Games
Official Original Sony Playstation Dual Shock 3 PS3 Controller Multiple Colours | eBay
Buy Sony DualShock 3 from £109.09 (Today) – Best Deals on idealo.co.uk
PS3 Official Dual Shock 3 White Controller - CeX (UK): - Buy, Sell, Donate
Sony Dualshock 3 Wireless PS3 Controller: Official Sony Gamepad - Purp – Technocontrollers
More details on the Dual Shock 3 PS3 controller - CNET
13 Plastic PS3 Dualshock 3 Wireless Controller (Ps3)
DualShock 3 PS3 controller Black (PS3) : Amazon.co.uk: PC & Video Games
Dual Shock 3 Metallic Blue PS3 - DiscoAzul.com
PS3 Official Dual Shock 3 Camo Controller - CeX (UK): - Buy, Sell, Donate
Official Genuine Sony Playstation 3 - DualShock 3 Controller - Multiple Colours | eBay
Display stand for PS3 controller - Crystal Black | Rose Colored Gaming – ZedLabz
Sony Ps3 Controller - Etsy UK
Dualshock 3 Controller-Metallic Blue : Ps3 Accessories: Amazon.co.uk: PC & Video Games
PS3 Official Dual Shock 3 Controller - CeX (UK): - Buy, Sell, Donate
Playstation 3 Slim 500 GB (Blue) + 2 Dualshock 3
