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Never heard of the 159 razor hone. What are the dimensions? Photos? Single-grit or double-grit?

Thanx,
Christopher

That particular scan is from a current online auction, and I think it's against the rules to post the link at this time. However, you could always go to your favorite online auction site and search...

Unfortunately, I don't own the catalog. I only glean my information from online scans, and that's all I have from this particular catalog issue.

Thanx,
Me

Great points!

How about another kink in the Carborundum works? Sometimes the stone changed while the model number remained the same. Here's a few pages from a 1903 Carborundum Company Catalog...

For the sake of future research, I'd like to note that F20 was the eBay seller's internal auction number for that particular auction. (Every item sold by that eBay seller ends with a letter/number...

Yes, those are all razor hones. Some are marketed "Carborundum Razor Hone" and some are marketed "Carborundum Dry Hone."

The size is one difference. The grit is another, I suspect. (I've read that...

I started doing a bit of research on this a while ago. (Even made myself a little spreadsheet to keep track of numbers and dimensions.) And I'm not convinced of the number/coarseness theory I've read...