Thanks, but I have Geillette blades made in 1953... they came with my Tech. I am sure they are not stainless steel.
I had a great experiences with this. The very first blade I used was really worthless. In one stroke it sliced off like 5% of the facial hair in its path. The second one, a bit better but the same thing. I thought it was a bad angle. But after that I have used derby and Astra sp. And the difference... MY GOD! Hahaha now I have understood that derbys are not for me(razor bumps) and the astras, only had 1 shave so far, a good shave but we'll see how shave nr2 is =)