Steve, thanks for the speedy reply. I don't know the weight as I am purchasing this from a friends widow. Any and all information about the gun that you might provide would be helpful. I have visited your website and would be happy to email photos privately. I suspected it was a black powder rifle. I am unsure of the year of manufacture but suspect it is pre 1920's. It has some light engraving and the dark wood is nicely figured. It does not, however, have a 3-leaf sight on the barrels but only a single leaf. For what range is regulated for is unknown. I have been looking online for a Charles Lancaster collector group but have been unsuccessful. As to where any production records are located I haven't a clue.
