I have a rifle that's been in the family forever, I wonder if the maker can be identified. The rifle has been in the family since 1846 for sure. Don't know how new it was then. An ox was traded for it, with someone in the Donner party, whose ox had died. I'd call it .40" or .41 caliber, shoots .375" ball pretty good. It is stocked in oak, ram-rod is oak, butt plate is brass, trigger guard is silver or "German Silver", and thimbles are some kind of a sheet metal. "PB" is on the top flat of the barrel. This does not match the initials of anyone in the family, who were ever in possession of the rifle. The barrel was cut-down sometime in the late 1800's. We know it had a longer barrel originally.