I picked up a Gem 1912 at an antique store the other day for a fair price. I've owned, displayed, and sold a few SE razors since I started wet shaving. However, until now, I've never actually bought the blades to use them. Well, I stopped at my local Rite-Aid to buy a small pack of their store brand SE blades (that's all they had). I came home, loaded up a fresh blade, and the next morning... this is what I saw after using it. I still got a damn good shave out of it but I was shocked to see this kind of reaction. I can only assume that it's due to some kind of chemical reaction between the two metals. Is this normal?
I must say though, I can definitely see why SE razors have a following still. My first SE shave was fantastic! Darn near BBS with no nicks, weepers, or cuts on a 3-pass shave.