All 3 blades are flat or have a slight smile to them. All 3 are sharp enough to cut arm hair 1/4" from the surface. They all have staining, but no active rust. The tonsorial gem has slight pitting near the toe about half way up the bevel, but the egde is clean and sharp. I butterknifed all 3 to get a flat edge, set the bevel and honed and stropped them. I was thinking of making new scales for the brown one, we shall see. I have seen some reference to the Clauberg, but cannot find anything on the others.