Looks to me like a FED 1g but the lens looks like an Industar 22 rather than the correct FED lens. I can't see the aperture tab that a FED lens would use, although the pictures aren't the clearest. Interesting that he says the case is certainly genuine (presumably because it says Leica on it, which is no guarantee) yet he's not sure about the camera (which also says Leica on it!).
I love these "I don't know anything about cameras" type ads - they know nothing yet they have set a price. Anyone with half a brain would go do some research before selling an item that they knew nothing about. How else would you know that you got a fair price?