Okla. Stat. tit. 12A, § 4-210
Oklahoma Code Comment
This section was pre-revision Section 4-208 .
1. Subsection (a) grants the collecting bank a security in an item to the extent of credit given that is either withdrawable as of right, withdrawn or applied. To the extent of the security interest, the bank has given value and thus may be a holder in due course under Section 4-211 (pre-revision Section 4-209 ) . See American Exchange Bank, Collinsville, Okla. v. Cessna, 386 F.Supp. 494 (N.D. Okla. 1974); Peoples Bank of Aurora v. Haar, 421 P.2d 817 (Okla. 1966). Oklahoma also has recognized the banker's common law lien on items in the bank's possession. See Gillette v. Liberty Nat'l Bank of Tulsa, 95 Okla. 76, 218 P. 1057 (1923). This Section is in accord.
2. Subsection (b) has two purposes. First, difficulties are encountered when the depositor deposits a number of items at one time, and then draws against the credit given for the deposit. If one of the items is dishonored, the question arises as to whether the credit given for that item has been withdrawn. The solution is that the bank has a security interest in all items. Second, this subsection adopts the "first-in, first-out" rule in determining whether the credit given for a particular item has been withdrawn.