3.5” button. Muchinsky’s Baseball Pin-Back Buttons lists this as “T10” with value of $1000. Button has a single pinpoint white dirt speck trapped under the cello near the top left edge of his cap and just a couple of tiny 1/32” surface indents barely showing even in reflected light. Exceptionally bright and clean for a button of this age and size. Rare and displays essentially Mint as made.