Message:

<p>[QUOTE=&quot;d.t.menace, post: 966603, member: 18944&quot;]Here&#039;s my possibly hair-brained theory. Is it possible that some kind of contaminate is being impregnated onto the surface of the copper when the sheets are being rolled to make the planchets? With it being only on the surface, when the coin is struck the areas where the metal gets stretched the most on the devices is where it seems to disappear.&nbsp; I agree with rlm that this isn&#039;t caused by an improper mix of alloy like the wheaties. On these you don&#039;t see any lighter tones,only darker ones.[/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