Presumption as to documents: prosecution-produced or seized documents attract a rebuttable presumption of authenticity and handwriting. Where a document produced under the Act, seized from a person's custody or control, or received from outside India is tendered by the prosecution, the court shall, unless the contrary is proved by that person, presume the truth of its contents and that signatures or handwriting purporting to be of a particular person are in that person's handwriting, and that executions or attestations were made by those who purported to execute or attest.