The production of the
Commonwealth of Australia Gazette containing any proclamation, gazette notice,
or regulation appearing to have been issued or made under the Customs Act
1901 , or the production of any document certified by the Comptroller General
of Customs or a State Collector of Customs to be a true copy of or extract
from any such proclamation, gazette notice, or regulation issued or made under
the said Act, shall be prima facie evidence of the issue or making of such
proclamation, gazette notice, or regulation, and that the same is in force.