You may call the Titleist Customer Service Department directly and have someone check the validity of your serial number.

Thanks - 

Congratulations on your purchase.  So far I have not seen any fake Kombi S's yet so id think you are safe.  

You might want to post it on the cameroncollector.com  those guys know Camerons inside and out...

yea, like I said... his feedback is amazing and I paid almost retail :)

thx pretty excited about the putter, I just ordered 2 vokeys off him