On a couple of razors the blades developed these small black spots like freckles.
I think I narrowed the cause down to my Norton stone. I keep it in a tub of water.
It got a bit slimy, so I added bleach to a fresh batch of water.
Does bleach have this type effect on razors?
One blade was new and developed the spots while honing. None before starting, and a bunch before the end of the session.