Message:

<p>[QUOTE=&quot;dltsrq, post: 2295809, member: 75482&quot;]Hard and smooth or rough and mottled, the basic chemistry of copper reacting with carbonates in the soil is the same. The end result depends on both the alloy of the coin and the specific soil conditions. They can form surprisingly quickly. I&#039;ve seen century-old Indian cents come out of the ground with deep green patinas that would be envy of any sestertius collector (though not so much among Indian cent collectors!). Speaking of turquoise, I purchased this coin several years ago, solely for the patina:[/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