Military issue, 70s I have similar blades from Perma Sharp New York, same era same plain outer box that are Super+ Platinum. Not the best vintage blades but as good as any modern blade that's for sure.These are the stainless. I have two shaves on the first blade so far. I find it compatible with my personna reds, shaves just as good as them. With my whiskers I usually get three to four shaves with the personna's on a good week. Will see what these will do.
One thing I noticed right away is these are thinner than the personna blades. And on a good clean pass they seem to make a sound, like rubbing sandpaper? if that makes sense?
View attachment 1540689