Roc:
Here is a pic of the knife I mentioned above, I "think" the steel is 52100, or somthing very similar, it was an oblong roller bearing, was very slow to move under the hammer. Hope they like it. I really enjoy being able to make a knife with a little history behind it.
http://knifenetwork.com/ppost/showphoto.php?photo=434
God Bless, and Happy Holidays!
Mike