Quoted from RetroToys:
There's nothing physically special or different about it but it does have the matching serial number stickers on it along with all of the other boards, so I wanted to keep in it in there if possible.
You could always replace the display and then keep the boards along with the game and maybe fix it later. Displays with bad glass pop up all the time. I've cannibalized a few of them before to make one complete good display since it's common for one glass display to go bad, but not the other.