Thanks for the info Ronnie. I know the provenance of these two knives, and they are linked in that the were given by my grandfather to my father and uncle and both carried in the European theater in combat. Essentially, I inherited both knives at different points, whereupon they were stored in an old army foot locker at my mother's house. But what kind of documentation is necessary to deliver that provenance to a collector?

As to the larger knife's sheath, would it not be even trivially more attractive to have the sheath restored rather than present it without a sheath? Would the pair be more attractive presented together rather than separately? The more I handle them, the more I like them though. I was cleaning up the blades and realized how tough the metal is. Both have amazingly sharp edges and are extremely slow to polish even with a Dremel tool and rouge.