Hard telling. I know the credit union I get halves from sometimes they come in $500 boxes and sometimes in $500 bags. They are always rolled never seen a bag of loose coins.
I read somewhere that you'd have a better chance of finding error coins (that are not shaped correctly) because sone errors would get kicked out of the rolling machines...
i want to try to get a bag of pennies in hopes of indian heads, supposedly they slip in here and there, plus i wouldn't have to count the dang pennies lol
wow. i've hunted two boxs, plus another 420 rolls over two years, all i've gotten is S mints, 60s copper cents, and about 60 wheats, and a couple errors.