Okla. Stat. tit. 21, § 21-1623: Fraudulently uttering one's indorsement as another's

Every person who, with intent to defraud, endorses any

negotiable instrument in his own name, and utters or passes such

instrument, under the fraudulent pretense that it is endorsed by

another person who bears the same name, is guilty of forgery, a

Class B3 felony offense, in the same degree as if he had forged the

endorsement of a person bearing a different name from his own.