The knife that's highest up in the top image is 01 tool steel (arne) ca 58-60 hardness the bottom two are spring steel ca 55-57 att the hardness scale. They are flat grinds at 20 degrees with a polished micro bevel.
Those are really nice. :thumbup:
If they will be used as scalpels probably a mirror finish would be appropriate and also getting rid of the maker's mark, at least from the blade.
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