Evidence Ordinance

A witness in any proceedings may be questioned as to whether he has been convicted
            of any indictable offence, and, on being so questioned, if he either denies or does not
            admit the fact or refuses to answer, it shall be lawful for the cross-examining or
            opposite party to prove such conviction, and in such case, and also whenever it may be
            necessary to prove the trial and conviction or acquittal of any person charged with an
            indictable offence, a certificate, record, or extract of the conviction containing the
            substance and effect only (omitting the formal part) of the conviction for such offence,
            purporting to be signed by the clerk of the court or other officer having the custody of
            the records of the court where the offender was convicted, or acquitted, or by the
            deputy of such clerk or officer, shall, on proof of the identity of the person, be
            sufficient evidence of such conviction or acquittal, without proof of the signature or
            official character of the person appearing to have signed the same.