vintage GEM/STAR Scientific blades

[Droo78]

As many of us have found out, whereas vintage carbon steel DE blades tend to be "rough as a cob" as we say in Texas, many vintage SE carbon steel blades are very sharp and give great shaves.  Yes, you have to dry them off after each shave so they won't rust, but still give great shaves.  Has anyone tried the vintage GEM/STAR SCIENTIFIC  blades that can come in either the yellow or white colored plastic blade-holder?  If so, how were they?  Thanks,
Cleave

I have some that are in the yellow dispenser. I bought a case of 120 of them a while back. They shave well. I actually sent some to Jim "Jayaruh" to try but do not remember if he used them yet.