Letters testamentary must be substantially in the following form:

State of Oklahoma,

County of ______.

The last will of A B, deceased, having been proved and recorded in the county court of the county of ______, C D, who is named therein, is hereby appointed executor.

Witness G H, judge of the county court of the county of ______, with the seal of the court affixed the ______ day of ______ A. D., 19__.

R.L. 1910, § 6242; Amended by Laws 1953, HB 676, p. 234, § 10.