I am hoping that you can help me. I have a very old revolver that I need identified. . Maybe you can figure this out. It is an American Arms CO Boston, MA U.S. top latch, 6 shot, 32 S&W long, nickel plated, grips are rubber. It also has a S&W type star auto ejection system. This gun as far as I can tell from my research so far, was made between 1867 & 1902. It was introduced after the 32 short Top Latch 5 shot with the manual ring for unloading. I hope this info helps. I look forward to hearing from you. I also have a box of norma 32 S&W LONG AMMO.