. . . . . . . . . "The Trustee may request and conclusively rely upon, and shall be fully protected in acting or refraining from acting upon, any resolution, Officers?? Certificate, certificate of auditors or any other certificate, statement, instrument, opinion, report, notice, request, consent, order, appraisal, bond or other paper or document reasonably believed by it to be genuine and to have been signed or pres" . . . .