Secondary evidence means and includes—
- Certified copies given under the provisions hereinafter contained;
- Copies made from the original by mechanical processes which in themselves insure the accuracy of the copy, and copies compared with such copies;
- Copies made from or compared with the original;
- Counterparts of documents as against the parties who did not execute them;
- Oral accounts of the contents of a document given by some person who has himself seen it.