There are times when I really wish that Bannerman had stamped everything he screwed with! Have an acquaintance who once showed me his pride and joy, a M1861 Springfield Musket. Well it was marked "1861" and it had a Springfield marked lock. The barrel had the appropriate proof marks but had been cut down, it was a 2-banded musket. The forward several inches of the barrel had been expertly turned-down so that the M1855 bayonet would fit. The two rear-most screws for the trigger guard where upholstery screws w/washer. It was obviously a Bannerman put-together with salvaged parts.
"No man's life, liberty, or property is safe, while Congress is in session." Mark Twain