Alright, I wish I could say for certain it is (fill in the blank), but I do not want to tell you inaccurate information.
So, here is what I suggest. Send Rob Orlando an e-mail with the photos you posted here and ask him to assist. His contact information is found by clicking on his name as author of the stickies. I'd also post the link to this thread into the body of the e-mail.
It looks like that knife may have gone in for a "spa treatment" to be refurbished at some point. Asking the maker should give you the best and most informative response. Please be respectful and patient when e-mailing Rob. He is an awesome guy and will respond to you.