I think the coin holders will stay in place if there is sufficient pressure between the foam and the plexiglass. That is, you want it to be that when the door is closed, it presses the coin holders into the foam (not necessarily flush, depending on the foam density).
That being said, I think mds308 is right. Snap-On is high dollar. You might be able to sell it and buy a case designed to display holdered coins.
That being said, I think mds308 is right. Snap-On is high dollar. You might be able to sell it and buy a case designed to display holdered coins.





















