N.M. Stat. § 46-8-5
Evidence of appointment or incumbency.
A corporation or transfer agent making a transfer pursuant to an assignment by a
fiduciary who is not the registered owner shall obtain the following evidence of
appointment or incumbency:
A. in the case of a fiduciary appointed or qualified by a court, a certificate issued by
or under the direction or supervision of that court or an officer thereof and dated within
sixty days before the transfer; or
B. in any other case, a copy of a document showing the appointment or a certificate
issued by or on behalf of a person reasonably believed by the corporation or transfer
agent to be responsible or, in the absence of such a document or certificate, other
evidence reasonably deemed by the corporation or transfer agent to be appropriate;
corporations and transfer agents may adopt standards with respect to evidence of
appointment or incumbency under this subsection provided such standards are not
manifestly unreasonable; neither the corporation nor transfer agent is charged with
notice of the contents of any document obtained pursuant to Subsection B of this
section except to the extent that the contents relate directly to the appointment or
incumbency.