Check the listing for details. Vintage Single Replacement Billiard 2 1/4" Pool Ball No. 10 Blue Ball. Condition: Used, Made in Unknown. Listed at 4.80 USD. This Vintage Single Replacement Billiard 2 1/4" Pool Ball is a specific blue ball that can be used to replace a missing or damaged ball in a pool table. The ball is authenticity guaranteed and is perfect for collectors or enthusiasts looking to complete their set of vintage pool balls. With a classic design and high-quality construction, this blue ball is a must-have for any billiards game.