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I'm of the opinion that the larger the razor, the more metal you have to get it right before it gets ground down to a nub. The steel is so hard that unless it is hooped you will get a razor shaving...

Etching or stamps, try a dremel with a felt wheel and some Maas or Autosol or some type of thick paste steel polish. It is the least abrasive and will do the least damage. If you just want it clean...