As long as the ticket was filed within the required time period, the fact that the ticket isn't stamped with a date probably won't help you. Most courts will review the court information to see when it was filed.
A stamp is not a requirement; however, there should always be more than one copy of a ticket available. Some tickets are electronic, however, so you could have unlimited copies of those; other tickets are handwritten, and the number of copies is limited.
This answer is given merely for informational purposes and does not create an attorney-client relationship. For specific advice, contact an attorney in your state to see if working together makes sense.