I'd be curious to know the same thing. I have never ordered
anything in a bag because I didn't want my coins banging around
against each other. I know the ones in the rolls got banged
around before being rolled, since they are poured through machines
all during the minting process, and aren't given any special
handling... However, once the coins are rolled, the banging
around is done. In a bag, if not protected, it would be a forever
process of banging around. Marks that weren't there yesterday,
just might be there tomorrow. I doubt very seriously there is protection.