You have a .38 Double Action Perfected Model. It is the last top break revolver introduced. It is the only one that has both a top latch and a cylinder release on the side. These were mfg. between 1909 and 1920. The S/N would be the 3821 listed on the cylinder, and it should be on the bottom of the gun butt, but you would have to remove those grips to see it. If the grips are original to the gun, the S/N may be stamped or written inside the right grip panel. With that 4 digit number, I would guess 1910 - 1911. Those grips are probably not original to the gun, they are I Frame Targets, such as would be on a 22/32 Target, or a Single Shot. Since these were from the same time period, it may have been possible for them to have been a special order. Only a letter from the Historian could tell. The condition of your gun appears to be excellent, especially the grips. A letter from the Historian would tell you when the gun was shipped from the factory, who it was shipped to, and in what configuration, (if the target grips were original). Who the gun was shipped to would most likely be a distributor through the gun was ordered, however it it possible it was shipped to an individual in that time frame.

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H Richard
SWCA1967 SWHF244