| (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, |