Well, about the only way you can ck that # is to join SRS research. He only cks if you join. It use to be free online but when the man who did most of the research, plus unscrupulous dealers used his system to falsely sell their wares, the new owner took t offline & started joining.a requirement. You won't get much from Remington as their records were in such disarray I don't know if they will ever get them straightUnfortunately, there isn't as much info available on old Remington guns as there is on old Colts. I have a Remington New Model (1858) serial number 3129 and would appreciate any information on this gun I can get. Thanks in advance.