Proof of handwriting.
Section 327
SEC. 327. Proof of handwriting. — The handwriting of a person may be proved by anyone who believes it to be his, and has seen him write, or has seen writing purporting to be his, upon which he has acted, or been charged, and he has thus acquired knowledge of his handwriting. Evidence respecting the handwriting may also be given by comparison, made by the court, with writings admitted or treated as genuine by the party against whom the evidence is offered, or proved to be genuine to the satisfaction of the judge. Where the writing is more than thirty years old, the comparisons may be made with writings purported to be genuine, and generally respected and acted upon as such by persons having an interest and knowing the fact.