Sal...I have looked through the manufacturing book on a couple of occasions. It does not tell you anything about a particular revolver. For example, the book only shows how many of each model were made on a particular day. For the 44 Magnum, it lists the number of NT-430s made each day. There is no information on serial number, finish, or barrel length. The shipping records tell you where and when a particular serial number was shipped. Again, no reference to anything about the gun. The invoices must be checked for that information and they are located at the Museum of Springfield History.

Bill