The H&H gun was made in 1935. That was the only time they designated the model as Centenary (Henry Holland opened his tobacco shop in 1835) Looks very similar to a gun I imported several years ago and sold back to the H&H NYC branch. Interestingly the Wall thickness was .014", yes 14thou. I pointed this out to Guy Davies as he looked over the gun. He responded "Don't worry about that that's the way we made them"

Hugh Lomas,
H.G.Lomas Gunmakers Inc.
920 876 3745