Corrosion removal advice

[RamsesII]

Any advice on how to remove this corrosion (if possible) with least damage to coins? Or are they cooked? Thanks.

 

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[enamel7]

A good acetone soak and then some verdicare.

 

[RamsesII]

Excellent! I'll try and let you know. Thanks.

 

[jerseyben]

Acetone is not going to work on those. Try some lemon juice. Watch it carefully and dont let them soak or else it is easy to "go too far".

 

[enamel7]

Lemon juice will damage the coin's surface and change the color. The acid in it causes the damage. Google verdicare and. It will remove it and stop it from spreading.

 

[jerseyben]

Lemon juice will damage the coin's surface and change the color. The acid in it causes the damage. Google verdicare and. It will remove it and stop it from spreading.

Look at the coins in the picture! The surfaces are already damaged...

I would not recommend lemon juice on rare coins, but look at the picture. Lemon juice isnt gonna hurt anything in this case.