Have you seen the "Hall of Shame" page?? 99% of the time, a fake kate spade is unbelievably easy to spot!!
But...on this bag, the rivets have the KS dot logo embossed on them (I've NEVER seen a counterfeiter do that); ditto the turnlock...the embossed label is correct. Next, inside, the leather surrounding the zipper pocket with the integrated label embossed in gold is exactly as it should be. On a fake, the zipper isn't ever surrounded in leather and often there is simply a glob of vinyl sewn on to the lining with either a fake fabric label glued on to it (most often, crookedly!), or the glob of vinyl is blank...no label, no nothing! The lining fabric is custom kate spade; it's the dot Noel lining, which is very high quality.
You really have yourself and authentic bag that looks to be in great shape, and if you tell me you paid less than $100, I'll have to steal it from you!!