“Secondary evidence of the contents of a document refers to evidence other than the original document itself. A party may introduce secondary evidence of the contents of a written instrument not only when the original is lost or destroyed, but also when it cannot be produced in court, provided there is no bad faith on the part of the offeror. However, a party must first satisfactorily explain the loss of the best or primary evidence before he can resort to secondary evidence. A party must first present to the court proof of loss or other satisfactory explanation for non-production of the original instrument. The correct order of proof is as follows: existence, execution, loss, contents, although the court in its discretion may change this order if necessary.”

It is clear, therefore, that before secondary evidence as to the contents of a document may be admitted in evidence, the existence of [the] document must first be proved, likewise, its execution and its subsequent loss.