What certificate of copy of writing must state.
Section 318
SEC. 318. What certificate of copy of writing must state. — Whenever a copy of a writing is certified for the purpose of evidence, the certificate must state, in substance, that the copy is a correct copy of the original, or a specific part thereof, as the case may be. The certificate must be under the official seal of the certifying officer, if there be any, or if he be the clerk of a court having a seal, under the seal of such court.