In December 1985, James Sanford drew a check on Main Street Bank payable to his son, Eric James Sanford Green. Sanford dated the check December 1, 2000. On the back of the check, Sanford wrote, “For Eric James Sanford Green, my son, if I should pass away, the amount of $20,000 shall be taken from my estate at death.” James Sanford signed and dated this statement. Is this a negotiable instrument?