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I just reread your post, and you said "metal leather," not leather. In that case it probably wouldn't be a strop. But if there's a smooth leather surface than it might have been a strop. :shrug:
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Richard,

What do you mean by "OK results"? Are we talking shaving results here, or just that the blade seems sharper to you?

If it shaves well for you, I'd say go for it. There are so many...

Richard,

This is totally a guess, but I'm thinking the leather backing is a small strop. So maybe this is a medium or medium-fine hone. The leather might have been used with some sort of paste to...