How to clean green coloration

[EmmaJohn]

Hi there,
I have been searching for a long time how to clean the metals. Few days before I noticed that my grandpa's trophies are kept in the storeroom. I thought to clean it and keep it on the shelf. I was cleaning it with lubricants but the green coloration on the trophies are not removed with lubricants. When I searched cleaning procedures I saw that inappropriate cleaning can cause color damage to the metals 5 Reasons Your Trophy Colour is Fading | Hoult-Hellewell so I am little worried about the cleaning. I thought the coins and trophies are made of same metals, so the same cleaning procedures used for the coins can be used on the trophies too. So, I would like to know the cleaning procedures for the coins especially for removing the green coloration on the metal.

 

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[Icewing]

The green is typically from oxidized copper. When it comes to coins, most people say don't clean them, especially not with abrasives. As for the trophies they are likely a cheap brass alloy like tombac. For those there are many metal polishes available, but if you happen to have some glass stove top cleaner, that usually works pretty good too.

 

[boogeyman]

You can also use Simi Chrome Polish. I water it down with a little spit. Water works too if you don't have spit.

Don't use anything rougher than clean flannel & very light pressure. Another step is spray it with some photo fixative spray, it doesn't look like it's been coated.

 

[against the wind]

It would have been nice to have seen some before and after photos.

 

[A2coins]

You could also have them redipped I would assume with a new finish

 

[Toecutter]

DEOX-IT D5.... best stuff iv ever used...