Starwalker Extreme

[kramacam]

I know the topic of fake vs. real Starwalkers is well documented in the forums, but I couldn't find anything specific to the Starwalker Extreme felt tip/rollerball.  What has my concerned raised is the placement of my serial number on the side of the clip.  It sounds like this is the tell tell sign of the base Starwalkers, but wasn't sure if the same held true for Starwalker Extremes. Shamefully, I did buy this one off Ebay, but from one of the largest Ebay sellers on the site, and felt it was comparable from buying off Amazon (not fullproof, but safer than Joe Shmo).  Anyways, all else looks on the up and up (box, placement/size of star, etc.), so the serial number is the only concern I've identified.  Thoughts?