Tim,
What's the printing like on the reverse of the card?
Does it match the others you have?
Bryan's right, if the printers printed these cards off in batches then there's every chance of variations in the printing ink. It might be worth looking at all of the POA autos you have side by side, as I think you'll notice that there are differences in the printing which you wouldn't necessarily notice when you're viewing them one at a time. I have cards back from Artbox that look different to the same ones I already own, so don't be too disheartened.

I haven't heard of any fakes doing the rounds, but of course, if someone is determined enough then it's possible.

Nice auto by the way!! Lucky you owning more than one of them!!
