Okla. Stat. tit. 58, § 58-83: Court's certificate - Filing - Letters testamentary

When a lost or destroyed will is established, the provisions

thereof must be distinctly stated and certified by the judge of the

district court, under his hand and the seal of the court, and the

certificate must be filed and recorded as wills are filed and

recorded, and letters testamentary or of administration with the

will annexed, must be issued thereon in the same manner as upon

wills produced and duly proved; if the court has admitted into

evidence a copy of the lost or destroyed will and finds that the

copy distinctly states the provisions of the will, the court may

certify the copy of the will as distinctly stating the provisions of

the will; the testimony must be reduced to writing; signed,

certified and filed as in other cases, and shall be admissible as

evidence in any subsequent proceeding.