Which of the following is NOT required for a valid bill of sale?

The seller's signature is required as it provides legal proof of the transfer and authenticates the document, making it enforceable and preventing disputes about whether the transfer actually occurred.

A description of the items is essential to clearly identify what property is being transferred, preventing confusion or disputes about the specifics of the sale.

The date of the transaction is required to establish when the transfer occurred, which can be important for determining rights, warranties, and timing of obligations.