Okla. Stat. tit. 12A, § 12A-3-205: Special Indorsement; Blank Indorsement; Anomalous

Indorsement.

SPECIAL INDORSEMENT; BLANK INDORSEMENT; ANOMALOUS INDORSEMENT

(a) If an indorsement is made by the holder of an instrument,

whether payable to an identified person or payable to bearer, and

the indorsement identifies a person to whom it makes the instrument

payable, it is a "special indorsement". When specially indorsed, an

instrument becomes payable to the identified person and may be

negotiated only by the indorsement of that person. The principles

stated in Section 3-110 of this title apply to special indorsements.

(b) If an indorsement is made by the holder of an instrument

and it is not a special indorsement, it is a "blank indorsement".

When indorsed in blank, an instrument becomes payable to bearer and

may be negotiated by transfer of possession alone until specially

indorsed.

(c) The holder may convert a blank indorsement that consists

only of a signature into a special indorsement by writing, above the

signature of the indorser, words identifying the person to whom the

instrument is made payable.

(d) "Anomalous indorsement" means an indorsement made by a

person who is not the holder of the instrument. An anomalous

indorsement does not affect the manner in which the instrument may

be negotiated.