Title 11, Chapter 3, Section 403
(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
(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.