(1) A certificated public obligation must be executed by the issuer by:
(a) the signing by an authorized officer with the manual signature of such officer; or
(b) the signing by such officer with a facsimile signature in lieu of the manual signature of such officer.
(2) Each certificated public obligation may, in addition to the signature or signatures of an authorized officer or officers, have placed upon it a certificate or certificates as authenticating trustee, registrar, transfer agent, or the like. Such certificate may be signed by the manual signature of an individual or by a facsimile signature in lieu of a manual signature, provided that at least one certificate is signed by a manual signature.
(3) The certificated public obligation must bear the manual signature of either:
(a) an authorized officer as defined in 17-5-1102; or
(b) a person described in subsection (2).