Thanks for sharing Frank - I noticed it on GB earlier today and came here to share it as well, you beat me to it! Looking at this and some of Kuntz's other seemingly early works (full sideplate, germanic style lock, etc.), I see some similarities to Neihart's later work, but not so much Moll and Rupp, particularly when you compare the shaping of the wrist and comb transitions. It would be fun to lay a few of these earlier Kuntz guns on a table next to some of Neihart's later works for comparison.
-Eric