Silver Toning/Tarnish Removal

[Minted]

Hi,

I've got a second-hand modern silver coin with a considerable amount of toning around the edge.  Suspect a faulty capsule or poor storage.  (Or fake?)  The coin isn't particularly valuable so I'd like to try cleaning it.  

It has both a shiny & frosted finish - not sure if that makes a difference to cleaning procedures?  I have a 'silver cloth' which I was going to try gently first.  If that failed, I'd then try 'dipping' with tinfoil and bicarb.  Are either of those likely to cause more harm than good?  Or any other simple methods I should try?  

As I say, it's not particularly valuable so not too fussed if it doesn't work and I end up selling for scrap!

Thanks

[sovereignsteve]

Tinfoil and bicarb works well apparently, I've only ever used EZ dip or whatever it's called. I make my own up. If you use silver cloth or another contact method, you are sure to add some scratches however fine.

[Happypanda88]

We have covered this before on another thread.

I have used Robert Dyas Tableau Silver Dip to restore low silver coins and it works very well.

Dip for 3-5 seconds (depending on how tarnished the coin is) then rinse with clean water.

No rubbing so no scratches.

Before:

 

 

 

After:

 

[Pete]

As @sovereignsteve says anything that involves rubbing is likely to introduce micro-scratches unless you have skills in polishing using e.g. jeweller's rouge.
You cannot polish a frosted finish as it changes the surface and this will definitely ruin the matt finish.
E-Zest gets rid of tarnish ( not milk spots / stains ) by dipping the coin for a couple of seconds only before rinsing immediately in water.
Unfortunately it is relatively expensive in the UK compared to the USA but I've used it very successfully on heavily tarnished bullion.
Silver turns black when it is exposed to pollution containing sulphur - cigarette smoke, woodburning stove, open coal fire, industry nearby, traffic etc.

[WizardOfSov]

I've used the bicarbonate/foil/salt method before on an APMEX bar with polished and frosted sections and it lifted the tarnish without any rubbing required so no scratching.

I don't see any visible damage on the bar but admittedly I haven't had it under a scope or anything but it looks fine by eye.