My first thought was it was a converted Spoiler/Exploiter, but it does have a 'Series' serial number with no letter code, plus purpleheart laminates. I would have expected three for a Series II, but it may have started out as a Series I or was simply ordered this way. I don't know enough about these things to recognize finer details like body contours, but it does look like legitimate Series II controls to me. What's under the hood might be a different story.
But yeah, if this one makes you twitchy, I wouldn't screw around too long... ask your questions and make your offers.