Suzkat, I would spend your Museum resources on other stuff, unless you could trade even for an older one, that will probably look the same, or worse. The one you have could have been made in the 1880's or 1980's, and unless it has a cast in date you can't tell. Even early 19th century ones will look like that, and are getting harder, and more expensive to find. You have a winner there. Any description you would give for it, should probably just say that is a swage block used for forming, and of a style that has been around for centuries. They come in many shapes, and sizes to fit the needs of the smith. You got a good one there.
Bill