Please help me Identify this Ibanez

Hey, recently have had this Ibanez come into my possession, im no expert by any means but do know my guitars makes and models reasonably well, and im stuck identifying this, it was sold to me as a Prestige Custom but it doesn't feel standard at all its very smooth and has a rounded cut away and body very much like an Ibanez, S540 in fact I would put money on it being an S Series (fretboard inlays almost identical) , but then it says custom on it and i am unsure if there is an S-series deluxe or custom? it also has some evidence that it was purchased in the USA if that helps

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