You need to get a factory historical letter to tell you the ship date and confirm that it's a C&R gun. The letter will also tell you the shipping destination, date and the configuration of the gun when shipped, to confirm whether the ivory medallion stocks are original to the gun. The gun is a C&R ( made after Dec. 31, 1898) and falls under ATF rules as a C&R, I don't see any advantage over it being an antique, as it requires AFT transfer paper work to change ownership, and antique classification eliminates all that red tape. The gun is a .38 Double Action Perfected model, NOT a 4th model DA, and was probably made circa early WW1 era. This model was S&W's last top break revolver. A good cleaning of the interior action will probably return the gun to correct functioning. Ed.