The 10-6 is a descendant of the original military and police revolver line, I am going to guess from what you are saying that this is a 4" variant. I think the 10-6 is a heavy barrel model. The barrel markings simply tell you what round it is chambered for (.38 Special Cartridge - CTG is an abbreviation). I would have thought that the serial # was in the frame by the model # by that time, but I think I am wrong. Most likely those digits are internal tracking #s for assembly, inspection and the like. I have a vague recollection that NYPD inspected all the models sold through the equipment section to officers (no issue guns, just personally owned, department approved), so the E or one of the other #s may be an approval mark.
The serial # will be on the bottom of the grip frame (butt), possibly covered by the grips depending on the grip style. Find and post it and someone far more knowledgable than I with access to the right publications will give you a date for the likely year it was released from the factory (my guess is that the mods will want to move this string to the 61-80 sub-forum). I doubt that was your Dad's first duty gun, since he presumably started before S&W started model markings and simply called revolvers by their model name. Photos will help a lot, too - the people on this forum who have real nerd knowledge can tell you so much from photos and the serial # that it will amaze you.
Value depends on condition, but I doubt that this revolver has any collector value near the sentimental value it could have as an heirloom.
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NHI, 10-8.
Last edited by Doug M.; 04-20-2013 at 03:17 PM.
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