I have an Iver Johnson .38, top break 5 shot revolver. Under the grip on left side is a serial number "T43966". On the trigger guard is 43966 (no prefix) behind the barrel (above the cylinder) is 43966 again no prefix. On top of the barrel reads " Iver Johnson's arms and Cycle Works Fitchburg Mass. USA" On the bottom of the grip is " Pat. June 16.96 Aug 25 Pats Pending" If there is a number behind the 25, I cant read it. I cannot find any reference to an I J revolver with a serial number starting with "T". Can someone help. I just want to know for certain what year this was manufactured.