§ 4-3-308 - Proof of signatures and status as holder in due course.
               	 		
4-3-308.    Proof of signatures and status as holder in due course.
    (a)  In  an action with respect to an instrument, the authenticity of, and  authority to make, each signature on the instrument is admitted unless  specifically denied in the pleadings. If the validity of a signature is  denied in the pleadings, the burden of establishing validity is on the  person claiming validity, but the signature is presumed to be authentic  and authorized unless the action is to enforce the liability of the  purported signer and the signer is dead or incompetent at the time of  trial of the issue of validity of the signature. If an action to enforce  the instrument is brought against a person as the undisclosed principal  of a person who signed the instrument as a party to the instrument, the  plaintiff has the burden of establishing that the defendant is liable  on the instrument as a represented person under    4-3-402(a).
(b)  If  the validity of signatures is admitted or proved and there is  compliance with subsection (a), a plaintiff producing the instrument is  entitled to payment if the plaintiff proves entitlement to enforce the  instrument under    4-3-301, unless the defendant proves a defense or  claim in recoupment. If a defense or claim in recoupment is proved, the  right to payment of the plaintiff is subject to the defense or claim,  except to the extent the plaintiff proves that the plaintiff has rights  of a holder in due course which are not subject to the defense or claim.