(a) (1) Evidence is admissible to prove the interest of a witness in any proceeding, or the fact of the witness’s conviction of an infamous crime.
(2) Evidence of conviction is not admissible if an appeal is pending, or the time for an appeal has not expired, or the conviction has been reversed, and there has been no retrial or reconviction.
(b) The certificate, under the seal of the clerk of the court, of the court in which the conviction occurred is sufficient evidence of the conviction.
(c) Evidence that a witness has been convicted of perjury shall be admitted for the purpose of attacking the credibility of the witness, regardless of the date of the conviction, if the evidence is elicited from the witness or established by public record during examination of the witness.