Tom/Degens:
Your points are well taken on the WKC origin of these guards. These are unique to Holler in the sense that is has been modified with Holler characteristics. It is as much a Holler guard as the Weyersberg guard is unique to that company. And as you mention Degens, we all know the rarer Holler guard in Wittmann's book is a specially enhanced Pack 2nd. THe Henkels guard also comes to mind.