Glad to be of help. From a quick search, yours looks to be American. Check out the following-
www.ambroseantiques.com/swords/ivorydirk.htm
Here are some others of differing grades, styles and countries of origin-
www.rogersstudy.co.uk/peel/images_2/dirk.jpg
www.vallejogallery.com/item.php?id=1462
http://hometown.aol.com/machood/navaldirk.html
http://www.phoenixmasonry.org/masoni...naval_dirk.htm
Hope this helps. Oh, BTW, these don't have any value, so if you WANT to give it away anytime soon...
