I'm sure its been asked before, but I cant seem to find it.

What method of cleaning/polish stands the best chance of bringing an etched blade back to shine?

I recently picked up a find on the bay, and was pleased to discover it has a beauty of an etch job on it, but the whole thing has become heavily patina-ed(?) with a few small rust spots.

I want to save as much of the etch as possible, and make it visible again.

Words of Wisdom anybody?