I know it's not really an S&W but I also know that some of you folks know where I can begin to research a Frank Wesson Tip up Pocket Rifle 1862 Model 12", with brass shoulder stock in 32 Rimfire.
It has a four digit serial number 10XX.
So far I have been told that it was made in 1864. I put it in layaway and will get it out in a few weeks after my wife works enough overtime.