839. Evidence.

839.     Evidence.

In relation to a hearing1, the production of a certificate purporting to be under the hand of a competent officer of a court in the United Kingdom2 that a person has been convicted of a criminal offence is conclusive evidence of the offence committed, and the only evidence which may be called by the respondent3 in connection with an allegation4 of a conviction so certified or extracted is evidence for the purpose of proving that he is not the person referred to in the certificate or extract5. The professional conduct committee6 may receive oral, documentary