An RV Bill of Sale is a legal document that serves as proof of the sale and transfer of ownership of a recreational vehicle (RV) from a seller to a buyer. This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1.The buyer and seller should meet at a notary, tag service, or motor vehicle dealer to ensure the title application is completed correctly. How do I fill this out? You can renew your registration, learn more about registration stickers, and discover helpful resources about buying and selling your vehicle. A Pennsylvania boat bill of sale is a document used to demonstrate a finalized transaction between a boat seller and buyer.