I had a chance to witness disassembly of this swivel breach recently by an experienced gunsmith. The workmanship is amazing.
The hand forged swivel mechanism is a marvel. The sideplates forward of the swivel, lock, counterplate and barrels are all dovetailed into the swivel
mechanism. The work is tight to tolerances that are nearly CNC work. Blows me away that this was done in a 20 foot shop with no more than
daylight to work with. The lock on this rifle is marked Whitmore & Wolfe and dates to the period 1836-1852 making the rifle earlier than I had
originally thought. The lock is original to the rifle as the inletting is closely done around the inner workings.