Back in the day, I owned a Dural-receivered Hubertus vierling with the most unique claw bases I've ever seen. This was about 1970 and unfortunately I have no photos.
My vierling had the 5.6x35/R barrel on top, then 2 16s side-by-side, then the 8x57JR barrel underneath. Some previous owner had tried to chamber a 22 Hornet and of course it wouldn't go, so he forced it! It was almost totally FUBARed, I was young & dumb and not experienced enough to work on it, so I traded it.
Looked almost exactly like a typical drilling at first glance but it had about 1/4" greater action depth than my Sauer drilling. $1000 in 1970.....
Regards, Joe