Hello, Tory Burch Lovers!!

I am attempting to find a Tory Burch diaper bag...and have been advised by Tory Burch head office that they are unfortunately no longer in production! This leaves me with second-hand resale as my only option.

However -

I am very leery about buying off Ebay, because I don't know what to look for in a knock-off. I attempted to have one that was listed on Ebay last month authenticated, but no one responded.

Are there tell-tale signs of a knock off? What do I look for in an authentic one? For example, are there distinguising marks on the hardware? I am looking at buying one that is presently listed on Ebay, and there is a close up photo of the gold zipper pull - with Tory Burch engraved on it. Does this mean it's real?

Help!