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Neither would I. It's a stone for tools, machinists supply stuff, and removing nicks from knives. A very capable stone for those things, but not a fine stone and not fast cutting with light pressure...

right, examining the real thing and testing it on - preferably a tool or knife - would tell us immediately.

I haven't seen many old indias that get crumbly, but they are fragile and as they get...

Something doesn't look quite right about it for a norton india, but it could've been any other company's india stone or aluminum oxide stone back then. One would love to believe it might be a...

Strange color, looking at the texture I'd say it was some sort of fine soft arkansas or a washita stone.

The color should be more whitish or yellowish unless something has made it dark. There's a...