Presumption in prosecutions for contravention of directions issued under Sec. 55, 56, 57, 57-A or 63-AA

Notwithstanding anything contained in any law for the time being in force, in a prosecution for an, offence for the contravention of a direction issued under Sec. 45, 56, 57 or 63-AA on the production of an authentic copy of the order, it shall, until the contrary is proved and the burden of proving which shall lie on the accused, be presumed- (a) that the order was made by the authority competent under this Act to make it ; (b) that the authority making the order was satisfied that the grounds on or the purpose for which it was made existed, and that it was necessary to make the same; and (c) that the order was otherwise valid and in conformity with the provisions of this Act.