Okla. Stat. tit. 62, § 62-358: Signing and attestation of bonds - Certificates

All general obligation bonds including funding and refunding

bonds issued by a county, city, town, township, board of education

or school district shall be signed by the chief officer of such

municipality or political subdivision and attested by the clerk.

Facsimile signatures may be used as provided in the Registered

Public Obligations Act of Oklahoma. There shall be endorsed thereon

a certificate signed by the district attorney and county clerk of

the county in which such issuing municipality or political

subdivision is located that said bonds or evidence of debts are

issued pursuant to law and that said issue is within the debt limit.

There shall be contained on each of said bonds a certificate of the

treasurer of the issuing municipality or political subdivision that

he registered the said bonds.