At the end of the day, I found it was an H&R Hammerless Model 1, 1st Variation, made in 1902. Chambered in 32S&W, a long obsolete caliber. It was actually considered a black powder cartridge, used even into the early 1900s, well after smokeless powders had become commonplace..
The pics below are after cleanup. I'd have to say it came out looking fairly decent. Everything is functional, thought the return is a little sticky, but the cylinder locks up and rotates just fine. The action, lubed up, is heavy but reliable. I would have taken it apart to clean up the mechanism but as you can see below, there are no screws, only pins. These were decent, but cheap, little parlor guns in their day.
I gave it back to my Mother In law...she didn't recognize it. Told her finding ammo for it is pointless but if she has an intruder in the house she should just throw it at 'em and hope to knock 'em out....
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