That's an olive and gold XSV SL66 like mine. Has XSV Milled into both sides, XSV Buttons and should come up with the XSV team logo on the screen when you turn it on. Will have an X serial number on it as well.
It's one of the over the counter 66s, they came in XSV or Bushwacker versions. Exactly the same as the ones used by XSV just they had them annoed.
I'd be interested in knowing what it is worth to as I'm thinking of selling mine