Welcome to TFL, seems like you've got a black powder revolver with matching serial numbers (more desirable to a collector should you decided to sell).
I think its a .31 caliber, its in less than perfect shape but still worth quite a bit. Its value is determined by the percentage of its original finish that is still intact. In addition, the percentage of wood finish, and cracks and such in the grips need to be considered.
Im sure one of the other members here can give you some more specific details on its history and value.
Good luck.