RE: Water base Mixing Medium - Has anyone ever gotten a fake one? The reason I believe this one is, besides the fact that the code number is not the same as those being sold right now (and according to the code, it was the 1st batch, made in June, 2006 - however, the one's being sold right now, are A10, so how could the 2nd batch be older than the new one?), is the box. It's the type that leaves a scratch mark when you run your finger nail across it, just like the fake pigment & eye shadow boxes. I've seen many black MAC boxes, and NONE of the authentic one's do this. Could someone with A LOT of experience with MAC, confirm this. By the way, the bottle DOES have the measurement markings too, but that box is just so dang obvious!