S&W Mod. 10 + Cogswell & Harrison
I have come across an S&W Model 10 (I think), .38, 4" barrel, looks just like any other well-worn classic service revolver (Model 10), but on the left side of the frame it is stamped "Converted by Cogswell & Harrison". There is a rectangular lanyard ring attached to the bottom of the grip, and the barrel has what appears to be a proof stamp and "3.5 tons". The serial number on the bottom of the grip frame and on the cylinder's rear face, is 741xxx.
What is this? What is the thing with Cogswell & Harrison, whom I connect with high-end double rifles and the like, not service pistols?