Attached Link: http://www.loc.gov/copyright/

Great sword. I want one. Re: the copyright issue, you're free and clear unless like leather-guy said, you're copying someone else's artwork on the blade. This is just a historical reproduction. It would be different if it was your intent to copy a specific design that was owned by someone else. A few weeks ago, someone here did a copy of a sword that was designed and owned by WOTC, and they said no way, so he had to change it considerably. Check out the link above if you want details about what is covered by copyright. I'm not even sure that it applies to making 3D figures from the real thing. They are after all, two very different forms of expression.