Whew...i have to say I have a hard time buying it being original like this after 150 years. A gun of this age...ANY gun...if original in this condition, should come with a story of how it remained that way, where it was, etc. The fact that it was lumped into a group sale with no further attribution gives me reasonable doubt.
As Drew said, it's tough to fake age on these Twist barrels, so they may have only seen a "0000 massage." But the rest...
Either way, a sweet gun if priced right. Certainly a lot more interesting on the clay course than yet another cookie cutter Beretta or Browning O/U. 🥱
The 7/8 Fiocchi "Trainers" are the ticket.