I recently inherited my great grandfathers "Kropp", and it is very valuable to me. However I cleaned it up the other day using some brass polish, and I noticed some carbon marks on it, and a few very stubborn watermarks(or at least they seem like it) on the blade. Luckily there are no signs of pitting on the blade.

It's still like it was from the manufacturers, with the rough grind at the tip of the spine, but I would love to restore it, to get it looking like a lot of the razors I have seen here, Brilliantly bright and an almost mirror finish. HOWEVER, it has an engraving of who the agents were in South Africa who sold it on behalf of Osbourne, Garrett and Co., and I ould hate to lost that engraving during the restoration process.

Taking all of this into consideration, how would I go about in restoring it?

Thanks