This is from my dad's collection, who collected U.S. Civil War items. He has it listed as "Parker Bros. Shotgun" in his notes, but I don't know anything about it. The "Parker" on it looks cruder than others and it is missing Bros. so I'm not sure if this is from that company, or if it is, if the other part wore off because it is old. Any info you could give me on it would be appreciated, as well as what it's worth if possible.
Here's all the pictures on Google photos:
https://photos.app.goo.gl/R7k9LXRjbC5ds3aL6