If you know what you are looking at the fake is pretty easy to detect in hand or in most case even from a photo if it is truly the coin you are purchasing. There are plenty of reputable sellers on eBay. If you apply just a modest amount of common sense you can almost guarantee you are getting the real thing. But buying coins like this on the cheap from Chinese sellers without an extensive track record of selling coins on eBay is just plain dumb. One more thing, I would not put much stock in the photos as they can easily use a photo of the real thing or a rendering and just swap it out for shipment.