Some of these have cascium carbonate buildup (natural occurrence) which can be removed with clear water and non-abrasive rubbing. Otherwise; problem-free without and edge chips or fractures. I will not accept any trade in anything other than a padded/bubble wrap mailer or secured with adhesive cellophane tape or any other tape -- and the balance in trade can have any engraved graphic other than a sole numeral. These are uniface.