No, I can't blame you for being suspicious. I certainly would be. I am not aware of a site that you can use to cross-check the SN. But, I would go with my gut instinct on this one. Those tuners might be Fender aftermarket tuners and might have nothing to do with the maker of the guitar. Check to see if there is a label or something in the soundhole. You might find something that will tip you off as to who the maker is. I hope this helps!! Good luck.