Thanks for your thoughts.
The fittings are brass. The rib is riveted to the barrel, which is 42.5 inches long. The wood is a puzzle; could be a fined grained walnut or cherry. Does not resemble oak, and there is not a distinctive grain pattern. There are two brass fittings on the lock side of the stock. Can't tell if they were replacements for a broken stock or if they were original.
Have not fired it but we would like to do so.
Charlie