Button cleaning

[Mduece]

Found what I believe is a civil war era army general service button. I'm interested in opinions on whether I should try to clean it up more or leave it alone before I ruin it. Also if cleaning it up more is in order what would be the recommended process? I've included a pic of its current condition. Thanks for any and all advice

 

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[fever87]

If you see any gilt remaining on it use aluminum jelly (not navel jelly) and a toothbrush. It works wonders.