I’ve seen exactly one of them, and I believe it was a proof from the designer that Stetson had at the time. I’ve never seen a modern Stetsonian in beaver other than that one. The Stetsonian was discontinued before the “Pure” line of beaver felt hats was introduced. There is some reason to believe that the current Royal De Luxe felt is 10% beaver, but that’s from some advertising from the Japanese market. Neither the Royal De Luxe nor the Sovereign felts are beaver…maybe a small amount of beaver in the mix.