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Anyone know what this is?
Antique store find. A bay state abrasive product no a66.JC is written on the side. Seems to be some sort of ceramic material. It was sitting with a bunch of no Name barber hones. No sign of oil so, I tried it with lather, water and dry. Seems to work best dry. Refreshed a gold dollar edge (such as it is) with a few strokes. Any Thoughts?
It is rather large for a barber hone. 2.5"x8" approximately.
It is also, extremely hard material. Took over an hour on 400 grit paper to remove pencil lines, when I tried to lap it.
Attachment 204622Attachment 204623