This will definitely work and will get it to sparkle like new. Drop it in a bath of pure lemon juice for a couple of days. Take it out and rub it gently with a very fine grade of steel wool. Repeat as necessary. It has even worked on some really old V Nickels.
Don't leave it in the "juice" to long! IMO looks good the way it is! I won't use the lemon juice anymore. Think they always look better before it...used the sos pad method..not bad for a quick clean.will see what the lemon juice does...