Yea, I agree with all of the comments as I was thinking along the same lines. When I buy a Springfield flintlock musket, I insist on seeing the inside of the plate and lock mortice. That was not an option in this case, at least so far.
I can spot a Springfield recon from across the room, but my experience with civilian locks is limited. Especially when I do not have direct access to the gun.
Thank-you much for all of your insight, appreciate it.