Documents purporting to be signed by Chairperson, etc., to be admitted in evidence

In any proceedings under this Act or under any rule, regulation or by-law made thereunder, any notice or Order purporting to be signed by the Chairperson of any council or by any person authorized and acting under this Act or under any rule, regulation or by-law as aforesaid, shall on production be admitted in evidence and shall be presumed to have been duly signed by the Chairperson or by the person in the character by whom and in which it purports to be signed, until the contrary is shown.