PS3 Prototype Controller (aka Boomerang) - 3D model by rtql8d (@rtql8d) [0323745]
pix ben on Twitter: "Ps3 prototype on my youtube https://t.co/fJVRBunCnu https://t.co/J2lTNuqxjy" / Twitter
PlayStation 3 Boomerang Controller - The original PlayStation 3 Prototype shown off at E3 2005 had some major differences than the retail release. | Facebook
Prototype Controller Models | Page 2 | NeoGAF
PS3 boomerang prototype defended | Engadget
A prototype PlayStation3 controller, What The... : r/gaming
Military PS3s and PS3 prototypes: more exotic consoles you can find on eBay - Wololo.net