27.4 Priority of Security Interests Paul High purchased various items of personal property and livestock from William and Marilyn McGowen. To secure the purchase price, High granted the Mc- Gowens a security interest in the personal property and livestock. Two and one-half months later, High borrowed $ 86,695 from Nebraska State Bank( Bank) and signed a promissory note, granting Bank a security interest in all his farm products, including but not limited to all his livestock. Bank immediately perfected its security agreement by filing a financing statement with the county clerk in Dakota County, Nebraska. The McGowens perfected their security interest by filing a financing statement and security agreement with the county clerk three months after the Bank filed its financing statement. Three years later, High defaulted on the obligations owed to the McGowens and Bank. Whose security interest has priority? McGowen v. Nebraska State Bank, 229 Neb. 471, 427 N. W. 2d 772, Web 1988 Neb. Lexis 290( Supreme Court of Nebraska) 27.5 Purchase Money Security Interest Prior Brothers, Inc.( PBI) began financing its farming operations through Bank of California, N. A.( Bank). Bank’ s loans were secured by PBI’ s equipment and after-acquired property. Bank immediately filed a financing statement, perfecting its security interest. Two years later, PBI contacted the International Harvester dealership in Sunny-side, Washington, about the purchase of a new tractor. A retail installment contract for a model 1066 International Harvester tractor was executed. PBI took delivery of the tractor ― on approval,‖ agreeing that if it decided to purchase the tractor, it would inform the dealership of its intention and would send a $ 6,000 down payment. The dealership received a $ 6,000 check. The dealership immediately filed a financing statement concerning the tractor. Subsequently, when PBI went into receivership, the dealership filed a complaint, asking the court to declare that its purchase money security interest in the tractor had priority over Bank’ s security interest. Does it? In the Matter of Prior Brothers, Inc., 29 Wn. App. 905, 632 P. 2d 522, Web 1981 Wash. App. Lexis 2507( Court of Appeals of Washington) 27.7 Buyer in the Ordinary Course of Business Heritage Ford Lincoln Mercury, Inc.( Heritage) was in the business of selling new cars. Heritage entered into an agreement with Ford Motor Credit Company