Okla. Stat. tit. 21, § 21-1561: Wills, deeds and certain other instruments, forgery of

Every person who, with intent to defraud, forges, counterfeits

or falsely alters:

1st. Any will or codicil of real or personal property, or any

deed or other instrument being or purporting to be the act of

another, by which any right or interest in real property is, or

purports to be, transferred, conveyed or in any way changed or

affected; or,

2nd. Any certificate or endorsement of the acknowledgment by

any person of any deed or other instrument which by law may be

recorded or given in evidence, made or purporting to have been made

by any officer duly authorized to make such certificate or

endorsement; or,

3rd. Any certificate of the proof of any deed, will, codicil or

other instrument which by law may be recorded or given in evidence,

made or purporting to have been made by any court or officer duly

authorized to make such certificate,

is guilty of forgery in the first degree, a Class B3 felony offense.