Message:

<p>[QUOTE=&quot;huntsman53, post: 172727, member: 1242&quot;]Frank,</p><p><br /></p><p>I took another look at the 1989-D Cent and I still say that it is enviromental damage! However, the bubbling (separation of the Copper plating from the Zinc core) began quite differently than it did on the 1984-P Cent. The 1984-P Cent definitely made contact with something that ate holes in the Copper plating, thus exposing the Zinc core to futher damage and separation of the Copper platng which caused the bubbling. Hiowever, the 1989-D Cent was struck in such a way that did actually cause the &quot;D&quot; Mintmark to look like it was Repunched and which actually caused a small separation (crack) in the Copper plating and exposed the Zinc core to enviromental damage. Once the damage starts, it continues to grow and get worse with time. This type of damage is typical of many of the 1989-D Cent that you will find in circulation. I do not know the exact cause but I am sure that Mike Diamond can offer some info on the matter*. Note how the approximate outer 1 to 4 mm of the surface toward the rim is somewhat flattened while the remaining inner portions of the coin appear to be raised. Well, the &quot;D&quot; Mintmark and sometimes the Date are directly in the separation area between the two. Many times, you will find a 1989-D Cent that looks to have doubling on the Date or some of the Lettering and if the Copper plating suffers a small crack in it in this area, then the enviromental damage will begin to start it&#039;s work.&nbsp; *I am not sure if this was caused by a poor Copper plating mixture, a poor Zinc core mixture, over adjustment of the Dies or what but I see it all of the time and have many, many 1989-D Cents with the same type of damage.</p><p><br /></p><p><br /></p><p>The Other, Other Frank<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" 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