[Xringshooter]

There's got to be other markings on them to help id. They really need to be taken to a shop that can look at them carefully and have some other books to use to determine exactly what they are and then they can go into the Blue Book and/or others to see what the value is. I would caution him NOT to shoot them until they have been examined, a couple look like they have Damascus barrels (which don't react well to modern loads).