Division 2 Importations shall be treated as not being of a commercial nature if:

in the case of goods contained in consignments sent by one private individual to another, such consignments:

• are of an occasional nature,

• contain goods exclusively for the personal use of the consignee or his family; which do not by their nature or quantity reflect any commercial interest,

• are sent to the consignee by the consignor free of payment of any kind;

in the case of goods contained in travellers' personal luggage, they:

• are of an occasional nature,

  and

• consist exclusively of goods for the personal use of the travellers or their families, or of goods intended as presents; the nature and quantity of such goods must not be such as might indicate that they are being imported for commercial reasons.