Hello Peter. I'm not the one to ask on this type of sword, but I know that eventually, someone is going to ask you to post a pic of the whole piece to get a good idea of what we're looking at. I can say that sayings like 'warranted' and 'cast steel', etc, were frequently seen on early tools dating back well into the 18th century. I've heard of the warranted marking appearing on late 19th century swords, such as Civil War pieces, but am unfamiliar with any on such an early make of sword. Let's see what others have to say-
