I posted this in another thread:
The difference in the Stith mount is due to the evolution of the Weaver scope dimensions. The first version of K4 and KV had smaller objective bells and Stith used that elaborate front tube on that one. The bell got bigger and they designed the simple version. The 60 series Weavers are even bigger and Stith never built a tube for them.
The first series Weavers were marked with an S inside a diamond. The second series added an L to the diamond S. The third is the 60 series.
Stith made a plethora of mounts for a wide variety of scopes including German offerings. The early Kollmorgen scopes were 26 mm and there is a whole series of mounts for them.
I wish somebody would write this all down...
