These are actual bricks from the actual Bally building that they actually auctioned for charity at the Pinball Expo Banquet. The first brick was signed by pinball makers. The second glass looking brick is just a big freakin brick from the Bally building.
And now … to explain the joke. A “Bally Brick” is defined in the New Pinball Dictionary right over here:
But THESE ones here are #LITERAL Bally Bricks.
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