H&R Hammerless, Second Model, Small Frame, Top Break, Third Variation.
Picked up at the recent gun show for a song, and one with hardly any lyrics at that. Supposedly okay for smokeless-powder pressures, I'm thinking more like CB caps. Appears to cycle; it had one balky position on the ratchet until cleaning. Next range day, I'll find out for sure.
Odds are good that it was originally blued and has been fairly carefully stripped, probably to remove freckling. So it's more a shooter than a collectable, though it fits right in with my collection of .22 revolvers.