P.R. Laws Ap. tit. 32A, § IV, Rule 71
2019-02-20 00:00:00+00
The contents of a public record or of other document kept under the custody of a public entity or office may be proved by certified copy of the original issued by an authorized officer, or by a copy testified to be correct by a witness who has compared it with the original. If this is not possible despite the exercise of reasonable diligence of the proponent, other secondary evidence of the content of the original shall be admissible.