[andy800]

That's behind a paywall. In any case the photo needs to be very, very close to see it.

Look closely at this photo at full resolution: https://images.freeimages.com/images/large-previews/2cb/crap...

There is a very subtle North-South bump under the felt, directly in the center, under the words "CRAPS" and "DEALER and PLAYERS" and "Seven". It might be easiest to see at the lowest horizontal line, below the words "Any Craps."

Here's another hi-res photo, you need to already know it's there, but you can just barely make it out if you look very closely right down the center, under the felt: https://i0.wp.com/agrlv.com/wp-content/uploads/2019/05/DSC01...