Interesting, news to me!
Is this something certain?
We had previously discussed this on another thread at some point. And what I recall was that straight stainless blades had no coating.
There are very few blades that are not coated with Teflon. These are made of carbon steel, such as the Treet Black Beauty blades. Treet also makes some carbon steel blades with Teflon, though, such as the Dura Sharps.
In general, if a blade is made of stainless steel, it is coated with Teflon, at least. You can't really go by the labeling. Even if it doesn't say "Platinum" or "Chrome", etc. there's a coating of some kind. Maybe the coating doesn't cause you problems.
It’s only a blade-on-blade scratch to verify if your stainless blades are coated with PTFE or air.
So far as I know (which isn’t much), Personna Accutec 95-0068 are uncoated stainless.
Those particular blades are carbon steel, according to the catalog. You can get uncoated stainless GEM blades, but these are made for utility knives, not for shaving with.
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