I’ll start by immediately telling you that this is not the iPhone 5, but it does look like a prototype from the early days of the iPhone 4, way before Gizmodo. This N90AP prototype is now being sold on eBay, and you’ll notice that aside from having a very weird back, which you can easily do by buying some back replacements on eBay, it does have some screws in different areas when compared to the final iPhone 4 product released.
It also has a different UI when compared to iOS. It seems to be more of a prototype to test specific iPhone hardware features and not a device that will test software in any way. It could just be that this early software was used to test the first-generation iPhone prototypes before iPhone OS 1 was finished, but that’s just my personal speculation.
It’s only a matter of time before the device is either taken out of the eBay listing or is bought, but knowing how Apple can easily send the whole national guard after anybody holding a real prototype, I think it’ll disappear before it’s bought. Watch the following video to see the iOS UI in action.