Message:

<p>[QUOTE=&quot;dougsmit, post: 2555947, member: 19463&quot;]The question of copper and silver sticking to each other (bonding or adhesive was the question?) came up in that other thread but I&#039;m starting a new one here for it.&nbsp; This denarius of Domitian Caesar is not a fourree.&nbsp; The copper you see is on top of the silver not the other way around.&nbsp; Making a photo that makes this clear is a real problem but a stereomicroscope allows the diagnosis with ease.&nbsp; My best guess is that the coin was hoarded with copper coins and they once were corroded together into a solid block.&nbsp; This was probably separated chemically dissolving away the very corroded copper coins leaving some copper tightly adhered/bonded to the silver.&nbsp; This coin survived harsh cleaning pretty well probably because the silver used for it was relatively pure. I do wonder if the attachment is if fact aided by a naturally formed eutechtic (72/28) bond between the two.&nbsp; I suppose that would require cutting the coin to see a cross section so we won&#039;t know. </p><p>[ATTACH=full]550256[/ATTACH] </p><p>I bought this coin as a solid coin from a dealer who actually knew the difference or was so blind that he didn&#039;t notice the situation.&nbsp; This was in 1989 and I doubt I&#039;ll ever know.&nbsp; A collection of plated coins needs one of these.[/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