Message:

<p>[QUOTE=&quot;John Anthony, post: 2683767, member: 42773&quot;]I guess you could call this the ancient version of end-roll toning? A very experienced dealer friend of mine explained to me that this sort of patina happens when the two sides of the coin are in contact with very different substances, ie. the clay of a pot on one side and metal coins on the other. It sounds reasonable enough to me.</p><p><br /></p><p>Here&#039;s a litra of Sicily that just arrived yesterday. Athena has a dark olive patina with highlights of brass, while the hippocamp is covered in turquoise...</p><p><br /></p><p>[ATTACH=full]600445[/ATTACH]</p><p><br /></p><p>Some 20 years ago I went on a hiking expedition in the Andes, and the color of the reverse reminds me of the the color of the isolated, hypersaline lakes one comes across in that neck of the woods...</p><p><br /></p><p>[ATTACH=full]600446[/ATTACH]</p><p><br /></p><p>Anyway, post any coins you might have with bipolar patinas, and any theories you might have as to how they get that way. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/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