Does this look like a knockoff controller? It doesn't say DualShock 3 and you can see through it. Quick research says non DualShock3 controllers do exist and were the oldest models without
Sony Playstation 3 Controller - Original PS3 Gamepad Joypad Blau / Blu
Controller Original Sony für PS3: Sixaxis Dualshock, Move, Cam, Mikro's, Buzzer | eBay