Manufactured by Robins and Lawrence of Windsor, Vermont, USA c.1850′s, serial number 6S - out of a production run of about 400. .54 rocket ball and - I think - priming tape, >12 shots in a tubular magazine located under the barrel. The fruit of the collaboration of many great names of the American firearm industry in the 19th century, such as Henry, Smith and Wesson. Gotta love that all-steel low and heavy design. Some badass firearm here compared to fancy Henry.