In any prosecution (whether under this Act or otherwise) for any escape, attempt to escape, rescue or attempt to rescue of any prisoner, either against the prisoner himself or against any person concerned therein, or aiding, abetting or assisting the prisoner, or for any other offence arising in relation to any prisoner, a certificate given by the clerk of the courtF1 in which the prisoner was sentenced or was remanded in custody shall, together with proof of the identity of the prisoner, be sufficient evidence of the nature and fact of conviction or remand, as the case may be, and of the period of confinement to which such prisoner was sentenced or remanded.