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So, if the horizontal stria, from hand sanding, the bevel was never fully set, the bevel was never flat and honed to the edge.

Joint the edge on a 1k and reset it, see if you can get a pit free...

“uhhh it was not in a good condition.. to be honest i think someone sanded this horizontally on a couple of sports with sand paper.. maybe 1000 or 1200 to remove one stain or two...
but worst part...

Cell rot does not have to come from the scales on the razor, it could have been stored with an off-gassing razor, (I have seen an entire glass case in an Antique Store, affected by a single razor),...

To the OP, looks like Cell Rot pitting, and the edge is falling apart. Even at 500X the edge does not look good.

What are you stropping on, and do you know what the scratches on the back of the...