I clean/polish my nickel silver the way I do any other silver/silver plate -- with a commercial silver cleaner/polish.
Nickel plated
Silver plated nickel is a metal object that has a thin layer of silver electroplated onto a nickel substrate. This plating enhances the appearance of the nickel object by giving it a shiny silver finish. Silver plated nickel is commonly used in decorative items, tableware, and jewelry.
Rhodium plated jewelry can be cleaned in a solution of half Mr. Clean and water with a small amount of ammonia. Soak for 15 seconds then rinse with water and dry.
To clean gold-plated jewelry, soak it in warm soapy water and gently scrub with a soft brush. Avoid using harsh chemicals or abrasive cleaners that can remove the gold plating. Dry the jewelry thoroughly and store it in a separate pouch to prevent scratching.
Always make sure to clean both your jewelry and the piercings themselves with hydrogen peroxide to avoid infection. Store your jewelry in a safe and clean location. Never purchase plated jewelry.
No, because a plated metal is not a mixture of elements.
probably some time after it was made. the military model was not nickel plated.
Having worked in Jewelry factories..the main component metal is copper of which silver is plated onto it. Other metals are white metal or brass. Sometimes nickel. Nickel silver is plated on white metal and gold plate on brass or copper mixed alloys.
Rub with aluminum foil.
assuming it was nickel plated after market, it would lose value for that reason.....
Most white gold is plated to give it the bright white color. There is one white gold that I know of which needs no plating which is called "X1 White Gold". To clean your white gold plated jewelry a solution of half water and Mr. Clean with a small amount of ammonia can be used. Soak for 15 seconds then rinse with water and dry.
Gold-plated but not gold. It's an ordinary nickel that someone plated for use in jewelry or as a novelty piece. The US never minted nickels (or dimes or quarters for that matter) out of gold - it's worth far too much to use in small-denomination coins.