How can you tell the difference from the dugout between the single stamp prism and the dual stamp without asking the blue to check it? Is there any distinguishable differences in the look besides the stamps? I don't think there is a difference. How does everyone handle this? Just let it go even if it is the older single stamp and you are playing USSSA? Or ask the blue everytime they come up to bat with it? I wish more associations would check the bats before the tournament and put a sticker or something on it showing it has been checked. I know that won't happen because of the time it will take. But i know they do it at certain tournaments. Thanks