Message:

<p>[QUOTE=&quot;physics-fan3.14, post: 3610684, member: 19165&quot;]Spots can temporarily be removed by any normal conservation method (a dip, for example). However, because the spots are often due to inconsistencies in the alloy, the can sometimes return. They are called &quot;copper spots&quot; because these are localized areas of higher copper concentration - gold does not react with much, but copper reacts with just about everything. The reddish-orange spots are where the copper in the alloy is reacting. If you don&#039;t completely remove the higher copper areas (which would leave a pitted coin), the copper spots may return.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in