Per personal correspondence from staff at the Nat'l Park Service, LBH Battlefield, the recovered .44 American cases were all from Indian positions and represented 4 revolvers. Whether these revolvers were S&Ws, no one knows but we can presume so. Close serial numbers to the poster's gun were all shipped to MWR in first 6 mos. of 1874. Plus, some guns shipped at this time period had US Military proofs although they were not made for any US Gov't contract, but S&W hired Springfield Armory inspectors to proof the these guns hoping to secure foreign military orders. If fired cases from the posters gun could be forensically compared to cases at the Park Service, and there's a match, it would validate the provenance. If not, it's just another " gun story" Ed.