Message:

<p>[QUOTE=&quot;Oldhoopster, post: 3403325, member: 84179&quot;]Zinc blanks falling into the plating bath was a known processing problem when the mint first started purchasing copper plated zinc planchets in 1982 and 1983, so it&#039;s possible that there are coins with a higher percentage of zinc in the plating.&nbsp; The problem is that it is nearly impossible to do a non destructive test to show this. MOst&nbsp; NDT analysis penetrate the surface slightly and pick up the the zinc in the blank.&nbsp; Some of the scientists on CT may know of some advanced analytical methods but they would probably be very expensive</p><p><br /></p><p>I have a couple 82 and 83 cents that I found 30+ years ago that I feel are brass plated. However, there is no way to prove it, so they are worth face value. My opinion isn&#039;t going to convince anyone. BTW, you can&#039;t rely on color.&nbsp; Copper can react with too many things.[/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