I have a side manual ejector, .44 special S&W in the 37000 serial number range. Patent dates are 06,09, and 1914. 4 1/2 inch barrel, and REG.PAT.OFF. on back of hammer. I need a replacement hammer, but am unable to identify the model of this S&W. Can anyone help me out? There is no model number stamped anywhere on it. Also, any sources for parts would be appreciated. Thanks a lot!