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The Horn is often dyed Black

Those are two very highly regarded brands you are after, make sure you browse this forum in the "Razor Clubs" section there is the Boker Brotherhood and the Butcher...

I am not sure what horn they actually used back then, most likely whatever was the cheapest to get :)

Wade & Butcher and they are Horn but pretty dried out..

Not sure but something about the look of the grind makes me think this might have been re-ground into a Hollow, many of the older near...