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I started off at 2x 80 then 150 and ended at 220 iirc (not sure about the last one)

didn't have any lapping powder :P just my trusty 5mm alu plate & sandpaper..
where did you get your lapping...

Hey,

this is the very first honing stone I got from my grandfather well over 10 years ago, which he himself has had for many years before that
However i've never quite managed to identify exactly...