A bill of sale is a legal document that records the transfer of ownership of an asset to a second party in exchange for money. To transfer a vehicle from a seller to a buyer in a private sale, you can use the Vehicle Bill of Sale (PDF) (MV-912).Proof of ownership normally includes a bill of sale. The DMV does not provide a form for a bill of sale. To fulfill this requirement, the seller must provide the purchase price, the full name and address of the buyer, date of transfer and mileage. A bill of sale for selling a car serves as proof of purchase and transfer of ownership. It's a combination of a sales receipt and a contract. Proof of ownership may be a bill of sale, conditional sales contract, out ofstate registration, etc. 4. This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1. Use Missouri bills of sale to document the transfer of ownership of a firearm, boat, car, or other personal property from a seller to a buyer.