I recently purchased a high original condition Army & Navy CSL (Webley & Scott)that has most of its original case color and blue. However, for some reason 95% of the charcoal blue on the trigger guard is gone, leaving only grey metal. I would like to gently restore it but do not want to buff it because that would soften the engraving, etc. Using Scotchbrite pads I could clean the metal but not get it to the high gloss required for good charcoal color. What other alternatives would be attractive?

John McCain is my war hero.