Boston Globe 10/21/14: $40k for a marble? Have you lost your you-know-what? Bert Cohen’s passion is marbles, and after decades of collecting the glass orbs, he knows when a bad joke is coming. He almost always beats the would-be comedians to the punchline. “You know, I lose my marbles every day,” said Cohen, 83, of Wayland. But for Cohen, and committed collectors like him, marbles are no joke, but rather a serious enterprise that can generate thousands, maybe tens of thousands of dollars, during a single weekend at a trade show. The rarest marbles have sold for as much as $40,000.