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 :
Official Original Sony PS3 Six Axis Playstation 3 Controller Multiple Colours | eBay
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Advice on spotting fake Dualshock 3 controllers (European Market) : r/PS3
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Amazon.com: Playstation3 Sixaxis Wireless Controller : Video Games
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Original For Sony Ps3 Controller Bluetooth Gamepad For Play Station 3 Joystick Wireless Console For Dualshock 3 Sixaxis Controle - Gamepads - AliExpress
Official Original OEM Playstation 3 Ps3 Dualshock 3 Wireless Controller Gift – ASA College: Florida
Real or fake Dualshock 3? : r/PS3
Amazon.com: Playstation 3 Dualshock 3 Wireless Controller (Black) (Renewed) : Video Games
Amazon.com: Dualshock 3 Wireless Controller for Ps3 Charcoal Black : Video Games
Spotting a Fake PS3 Dualshock Controller
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Amazon.com: PS3 Dualshock 3 wireless controller - White : Videojuegos
Amazon.com: Sony Dualshock 3 Wireless Controller (ps3) : Videojuegos
Original PS3 controller Dualshock 3 Wireless Black – I.E.T. INDUSTRIAL ANTONIO PRIETO – SINCELEJO, SUCRE
How to Spot a Fake PS3 Controller Before Opening the Packaging - YouTube
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Wireless SixAxis Dual Shock 3 Controller - PlayStation 3 (Original)| Retro Gaming of Denver
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