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You're welcome, that thread helped me recognize mine as well.

Looks to me like a Tam O Shanter, especially the last picture. A bit like this one: http://straightrazorpalace.com/hones/21310-tam-o-shanter-scotch-hone-close-ups-4.html#post446305 just not as...

From these pictures it's hard to tell if it is a Charnley Forest. Perhaps after it has been lapped to about 325-600 grit we can tell. Sizewise it's possible but it could also be a similar stone.
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