In any inquiry, trial or other proceeding under this Code, a previous conviction or acquittal may be proved, in addition to any other mode provided by any law for the time being in force,-
(a) by an extract certified under the hand of the officer having the custody of the records of the Court in which such conviction or acquittal was held, to be a copy of the sentence or order, or
(b) in case of a conviction, either by a certificate signed by the officer in
charge of the Jail in which the punishment or any part thereof was undergone, or
by production of the warrant of commitment under which the punishment was
suffered, together with, in each of such cases, evidence as to the identity of
the accused person with the person so convicted or acquitted.
Code of Criminal Procedure (CrPC)
291 CrPC Deposition of medical witness
291A CrPC Identification report of Magistrate
292 CrPC Evidence of officers of the Mint
293 CrPC Reports of certain Government scientific experts
294 CrPC No formal proof of certain documents
295 CrPC Affidavit in proof of conduct of public servants
296 CrPC Evidence of formal character on affidavit
297 CrPC Authorities before whom affidavits may be sworn
298 CrPC Previous conviction or acquittal how proved
299 CrPC Record of evidence in absence of accused
300 CrPC Person once convicted or acquitted not to be tried for same offence