I recently picked up a Schick Injector Type A (1926). There was lots of tarnish and the cap was frozen tight. I decided to restore it. It had 7 of the original blades. I removed those, soaked them in rubbing alcohol and cleaned them up. Here is the before picture. Several hours later and lots of TLC and elbow grease and here is the after picture. These razors are amazing. The engineering is very smooth.