Samsung Galaxy S 4G

The reason I ask is that I have bought a few used Vibrants on Craigslist and I have one that looks different than the rest. The "normal" ones all have the eyes on the left of the earpiece that turn the screen on when you pull your head away but, the "odd" one has what looks like a camera hole on the right of the earpiece. The other two do not have this. I haven't actually seen the new Galaxy S in person to compare but, thought maybe someone "flashed" this phone wrong and could only get the older Vibrant OS running again. Any thoughts?