Such duplicate obligation shall be prepared by the commissioner of management and budget and shall be an exact and complete copy of the original, including the signatures, but need not be a facsimile. Each duplicate obligation shall have written or printed thereon a certificate, the form of which shall be approved by the attorney general, stating, in substance, that the obligation is a duplicate issued pursuant to sections 16A.461 to 16A.464 with like force and effect as the original. The certificate shall be signed by the commissioner of management and budget, attested by the secretary of state, and sealed with the great seal of the state, and bear the approval of the attorney general as to the issuance of the duplicate and the form of the certificate. Each duplicate shall have plainly written or printed thereon across the face or upon the margin the word "duplicate." Each coupon attached to the duplicate obligation shall have plainly written or printed thereon in like manner the word "duplicate," followed by the date of issue and the signature or facsimile signature of the commissioner of management and budget.