I only checked the supplied dominoes while playing. That was about five months after receipt. Look, the knuckles are mismarked. Although there are 91 dominoes, there are no elevens or tens at all, still a few extra matching doubles. The kit is NOT USED. As the return time has expired I now have a set that serves as a doorstop at best. A word to the wise: check when you get it. Should be 13-12, 12-11, 11-10, 10-9, 9-8, 8-7, 7-6, 6-5, 5-4, 4-3, 3-2, 2-1s and 1 space. For example, eights should have 8-8, 8-7, 8-6, 8-5, 8-4, 8-3, 8-2, 8-1, and 8-spaces. It's a complete mess.