There are three types of cadency marks in Scotland. One, the label is always a temporary cadency mark to show the heir to the arms. Then there are the temporary cadency marks that show the 2nd, 3rd, 4th sons etc. These are only used when the younger sons remain within their fathers household (the crescent, mullet and martlet etc). These are lost when these sons leave the family home. This then brings us to the third and final type of cadency mark. When these younger sons leave home and form houses of their own they have the right to matriculate arms with a bordure. Perhaps the chart below will help more:



From Simply Heraldry, Moncrieffe & Pottenger