i was right~!!! and they just roll the coins. unlike brinks a bigger greed they actually look at the coins they roll.. most of the time they can't swap.. the coins are hand put into the roller. or hand searched to the rolling machine
UPDATE, just rechecked the last box i had before i dropped it off... came across these 5 nickels. one minor off set, one maybe light pressed dye, one toned, one destroyed by the coin machine and the outer side pressed in