I helped a friend of mine go through some of his late father's assorted things today, and they have a (broken) Trapdoor with this box of ammo. The deceased man was a rabid collector of all sorts of historical military things, some of which seemed to be real/authentic and others that were clearly repro/fake. I'm not up on how I would identify whether these rounds were authentic from the last 19th century. I'm leaning toward some form of repro, since the box is in really, really good condition (i.e., it seems too clean to be ~140 years old). But if any of y'all can shed light on these, I'd appreciate it.