Okla. Stat. tit. 12A, § 3-308
Oklahoma Code Comment
1. Section 3-308 is a modification of pre-revision Section 3-307. The last sentence of subsection (a) recognizes a situation under sub section 3-402(a) that allows an undisclosed principal to be liable on the instrument. The undisclosed principal admits the authenticity of the alleged agent's signature unless specifically denied, but does not admit the alleged agent's authority to sign for the undisclosed. The person seeking to enforce the instrument against the undisclosed principal must prove authority. The reference to "compliance with subsection (a)" in subsection (b) refers to this requirement to prove authority; producing the instrument is not enough.
2. Subsection (b) would require a different result than the court reached in Friendly National Bank of Southwest Oklahoma City v. Farmers Insurance Croup, 630 P.2d 318 (Okla. 1981). The court held that "[i]f the facts show the possibility of a defense as between the defendant and the payees, this is all that is required by the law to place upon the plaintiff the burden of proving that it was in good faith and had no knowledge of the defense." Id., 603 P.2d at 321 (emphasis added).
The Friendly National Bank court's statement of the law evolved from a series of cases beginning with Sanco Finance Co. v. Neal, 387 P.2d 113 (Okla. 1963). For further evolution, se also Peoples Bank of Aurora v. Haar, 421 P.2d 817 (Okla. 1966); Timeplan Corp. of Okla. City, Inc. v. Fuxa 9 U.C.C. Rep. Serv. 262, 42 Okla. B.J. 1217 (Okla. Ct. App. 1971), and Oklahoma Nat'l Bank v. Equitable Credit Fur Co., 489 P.2d 1331 (Okla. 1971).
Under subsection (b), it is clearly only after the defendant proves a defense that the plaintiff must prove holder-in-due-course status. Proof of the possibility of a defense is not sufficient.