Endorsement after the due date produces the same effects as an earlier endorsement. However, an endorsement subsequent to the protest for want of payment, or made after the expiry of the period fixed for drawing up the protest, produces only the effects of an ordinary assignment.
Unless proved otherwise, an undated endorsement is deemed to have been made before the expiry of the period fixed for drawing up the protest.
It is forbidden to backdate orders on pain of forgery.