Help identify quality of these blades

[Siguy]

I had a pickup this afternoon.

These are vintage SE blades. As near as I can compare from finding a guide on the subject, the nearest SE blades that physically compare to them are the GEM type blades. They fit in the SE razor just fine.

Currently, some of the blades are slight corroded, though, not at the blade edge(in the ones I've seen so far). Should be ok to shave with, yeh?

My question is what sort of shave quality should I expect? Sharpness on a 1 to 5 scale? Etc.

I've never shaved with an SE or DE, but $10 for about 60 blades, a nice Gillette DE and a GEM Micromatic SE, I was sold. Keep on in the vehicle for road dry shaves?

Thanks guys.