This morning E Trade Supply posted a YouTube video showing what they think is an iPhone 5 back panel. Now this looks picture perfect to the one that was leaked last week, showing the Liquid metal design that Apple is exploring for building materials. But we think this video has nothing backing it up. This might be a mockup that someone machined out of plastic. When the person making the video laid down the mockup it made a noise very close to plastic hitting a desk, also an important thing to spot out is he did lay it on the front where the antenna band is and they cannot make that out of plastic. We’re not trying to bash this video but we are trying to get out a point. The video is down below if you want to watch it!