Okla. Stat. tit. 11, § 11-36-303: Bond payment and cancellation

The municipality shall have the right to call in and pay the

bonds or any number thereof in the following manner: Whenever there

shall be sufficient funds in the hands of the municipal treasurer

after the payment of all interest due and to become due within the

next six (6) months, the treasurer, on or before March 10 and

September 10 of any year, shall give notice by certified mail

addressed to the last registered holder of the bonds called at the

address appearing on his registry, that there has accumulated funds

sufficient to pay the designated bonds and interest thereon to April

1 next or October 1 next, as the case may be, and directing the

presentation of the bonds for payment and cancellation. The bonds

which are called will cease to bear interest after April 1 or

October 1, as provided in the notice. Upon the payment and

cancellation of the bonds, proper entry thereof shall be made upon

the books of the clerk and treasurer. Upon the accumulation of

sufficient funds as herein provided to pay one or more bonds, the

municipal treasurer shall call and pay such bonds, and in the event

of failure to do so, he shall be liable for all such damages as may

result therefrom. The provisions of this section may be enforced by

appropriate proceedings in mandamus against the treasurer.