§12A-3-403.

§12A-3-403.
   
                           UNAUTHORIZED SIGNATURE
                                      
   (a) Unless otherwise provided in this article or Article 4 of this
   title, an unauthorized signature is ineffective except as the
   signature of the unauthorized signer in favor of a person who in good
   faith pays the instrument or takes it for value. An unauthorized
   signature may be ratified for all purposes of this article.
   
   (b) If the signature of more than one person is required to constitute
   the authorized signature of an organization, the signature of the
   organization is unauthorized if one of the required signatures is
   lacking.
   
   (c) The civil or criminal liability of a person who makes an
   unauthorized signature is not affected by any provision of this
   article which makes the unauthorized signature effective for the
   purposes of this article.