To respond to some of the questions posed about authenticity, a few more images might be be helpful for some.
The first image shows the fake Cobb on the left next to a real Cobb in comparable condition. The front image excluding the border is taller on the fake. The overall coloring on the fake is also too green everywhere: green face, green hair, green uniform and even greenish borders.
The second image attempts to show the width of the printing on the reverse.
The fake Cobb printing on the left is narrower than the authentic Piedmont 150 back on the right. I do not think this card was rebacked with an authentic P150 reverse.
The third image shows Three Finger Brown over the fake Cobb. Notice the taller image on the Cobb card.
The fourth image shows a stack of nine T206 cards on edge. The thick brownish one in the middle is the fake Cobb, which is on stock twice as thick (or more) than a regular T206. The card is also quite stiff as a result. In hand there is no doubt.
The final image shows the fake next to my current Green Cobb. All of the above noted points are simply more apparent here. Unfortunately RGold tried to taste my current Cobb and left a couple of his "fang" marks on the left side of the background. His appetite saved me a few bucks.

Thanks Ron
Hopefully, in addition to providing some entertainment as Cobb hits the road, this little tutorial will help "newer" collectors avoid some mistakes.
Also note the back of this card will be marked as the "Net54 Cobb" to prevent any future owner from trying to sell it as authentic.