I have honed and cleaned up a ton of these razors over the years. The etching on the blades has always been very light and can be gone with just a couple of Maas passes. You have to be careful to keep it. The tang stamped USMC is stamped and therefor a much more permanent solution. These razors have always been excellent shavers. I am a big fan of Clauss straight razors across the board.

Have fun,

Lynn