SIGNATURE THROUGH AGENT, FORM The party may sign personally or through an agent
Agency may be written or oral
No particular form required by the law and the agency may be proved through oral or written evidence, unless specific provisions of the law, such as the Statute of Frauds, requires otherwise
Sec. 20. Liability of person signing as agent, and so forth. - Where the instrument contains or a person adds to his signature words indicating that he signs for or on behalf of a principal or in a representative capacity, he is not liable on the instrument if he was duly authorized; but the mere addition of words describing him as an agent, or as filling a representative character, without disclosing his principal, does not exempt him from personal liability.
REQUISITES FOR AGENT TO ESCAPE LIABILITY1. Be duly authorized
2. Add words to his signature indicating that he signs as an agent, that is, for or on behalf of a principal, or a representative capacity
3. Disclose his principal