Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. Keep copies of the bill of sale (FLHSMV recommends having it notarized), certificate of title or other type of transaction document showing it was sold.Need to write a bill of sale? Click here to follow a step-by-step guide and learn the 15 key elements that must be included in 2023. A bill of sale will detail a transfer of property or sale of items between a seller and buyer. This type of document serves as legal evidence. III. Completing the TC 843 Bill of Sale Correctly: Key Points: Provide a step-by-step guide on how to correctly complete the form.