So he called beforehand and was told he would receive his exact console back. He also included a letter just to cover all his bases. I bet you think you know what happens next. If you were to guess that Microsoft sent him a different plain white console back, you would be wrong.
They sent him his Xbox 360 back. The front serial number and the back serial number match up exactly. So what is the problem then? Someone at the repair center took the time to clean his console case. Despite the fact that the repairs that needed to be done were inside the console, someone wiped down the outside of the case. Wiped it down so well in fact that all of the signatures and artwork are completely gone. All that is left are some smudges and the unmistakable purple-ish hue of diluted permanent ink.