Message:

<p>[QUOTE=&quot;Ken Dorney, post: 3103546, member: 76086&quot;]Current research is narrowing the dates and areas of issue.&nbsp; The most recent (English) publication is The First Round Coins of China, 400 - 118 BC, by Gratzer &amp; Fishman.&nbsp; They address these briefly in the introduction and assign them specifically to the State of Chu, as early as the 6th Century and ending with the same state in 223 BC.</p><p><br /></p><p>As for the OP coin specifically, I dont think it has BD (I have never seen it on a Chinese coin ever).&nbsp; However, Chinese coins do get certain kinds of corrosion in which the surfaces (and edges) can turn powdery and are greatly weakened.&nbsp; This is not BD as it is never active, but if you brush it in any way it will remove all the oxides and knock off a lot of material from the coin.&nbsp; Doing so will ultimately destroy the coin or greatly reduce its value.&nbsp; I have seen Greek and Roman coins with the same patina and corrosion.&nbsp; In those case they are generally higher value and are treated to stabilize the problem.[/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