Hi, I have a 16b Hellis, but not the Featherweight model. She was made just prior to the Great War and sold after. I can tell you that Hellis guns are excellent quality guns. Mine is one of my favorite guns. Excellent handling and balance, excellent fit and finish, just a top notch example of the Gunmakers art. Here's some info on my gun:
And the gun itself:
Hard to beat a Hellis.
Best,
Greg