Keen Kutter razor hone info please

I searched but found very little with regards to this specific hone. If anyone knows anything specific as to its value AS A HONE and where it fits into a honing or maintenance regime, I appreciate it.

To reiterate I have NO INTEREST in financial value, or selling this.

I just want opinions as to its relative condition, if you recommend reconditioning (its flat, but has chips on the edges) and where it fits in (how can I expect it to behave in terms of grit compared to, say, a norton 8k or Naniwa 12k?

Thanks in advance.

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