This is the Daniel Casey Southern Smoothbore as seen in the History Channel's Iron and Fire (Episode 5).
It carries a 44" Colerain Oct-to-Round .62/20 ga. Brl., a Chamber's Round-face lock with a custom side plate, trigger guard, butt plate and Mr. Casey's signature poured chevron nose. It all sits on an Arkansas Black Walnut stock.
Copy and photos supplied by Larry C. Harmer.