You see what confuses me… I understand the slate they put on the back the Coticule is “useless” for honing… but this one cuts like the a demon… if didn’t know better I would say it’s Carborundum (ok, that may be an exaggeration but it does cut razor steel).
But the Coticule side does nothing… it’s like the opposite… the “useless” side cuts quite well but the “useful” side cuts nothing.
Maybe I am jumping to conclusions because I haven’t spent much time with the hone… However I have a vintage natural combo Coticule, I would say it is medium hard, it cuts very fast and puts a great edge an any razor… but I am not sure about this one (counterfeit?) lololol.