Presumption as to documents places a rebuttable assumption on accused about authenticity and admissibility of produced or seized documents. When a document is produced, seized, or received from outside India in proceedings and tendered by the prosecution against a person, the court must, unless the contrary is proved, presume the truth of its contents and that signatures or handwriting are that of the purported person, and that executed or attested documents were properly executed or attested. Such documents are to be admitted in evidence despite not being duly stamped, provided they are otherwise admissible, thereby creating a rebuttable evidentiary burden on the person to displace these presumptions.