Document presumption: courts must accept contents and handwriting as genuine unless disproved; unstamped documents admissible. Where a document produced by a person, seized from their custody or received from abroad in proceedings is tendered by the prosecution, the court shall, unless the contrary is proved, presume the truth of its contents and that signatures and handwriting are those they purport to be, including that executed or attested documents were executed or attested by the persons who purportedly did so; such a document shall be admitted in evidence despite not being duly stamped if otherwise admissible.