1995 Lincoln Memorial Cent / LMC Couriosity. Probable PMD, But Odd

To participate in the forum you must log in or register.

Author	Replies: 8 / Views: 650
Dowhat Pillar of the Community United States 877 Posts	Posted 05/28/2022 2:06 pm There is a chunk of this cent missing on the reverse below the E of ONE. I know that this will be determined as PMD. I am just curious as to how damage to this extent could be so confined to the immediate area. The edges are fairly clean cut. There does appear to be a slight ridge of ploughing out which should indicate a pushing out of material. Yet when viewed from the rim shot, there is little to no distortion in the width of the rim and field plane appears flat and even. Imo, a hit of this magnitude would have surely affected the flatness of this cent. It is not bent or distorted. The interior of the anomaly appears rippled. Like a reverse welding bead. It is the first time I have seen anything like this. Diameter across is 19.06mm. Opposite 19.05. Rim thickness across damage is 1.5 MM. Opposite side 1.5mm. Weight is 2.47 grams. A head scratcher I might 2x2 an label as a "Reverse Cud". What are your thoughts? Report this Post to the Staff

coop Bedrock of the Community United States 62064 Posts	Posted 05/28/2022 2:13 pm The plating over the zinc protects the zinc. When it is exposed to oxygen, then the zinc begins to rot/deteriorate. Eventually it will be a copper colored Hershey's kisses wrapper when the zinc is gone. Spender while it is still spendable. Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19215 Posts	Posted 05/28/2022 2:16 pm Yes. Ruptured/compromised cooper plating exposes zinc core, which leads to zinc rot. Report this Post to the Staff
Dowhat Pillar of the Community United States 877 Posts	Posted 05/28/2022 2:16 pm And I might add, the silvery residue in the divot is not exposed zinc. This first appeared as a blob of solder. Acetone soak for a day, 90% of blob removed. If it was all removed, the area underneath would have the same patina as the right side (dark area). The more I remove, the larger the area grows from right to left. Report this Post to the Staff
Dowhat Pillar of the Community United States 877 Posts	Posted 05/28/2022 3:41 pm Is there any speculation as to how this might happen without distortion? Report this Post to the Staff
lcutler Pillar of the Community United States 1658 Posts	Posted 05/28/2022 5:21 pm As stated, as zinc corrodes it just kind of crumbles. There is no real distortion to the copper plating except where it corrodes underneath and bubbles the surface up. With a break in the copper plating, the zinc will just continue to deteriorate. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 05/28/2022 5:53 pm PMD+zinc rot. John1 Report this Post to the Staff
Cujohn Pillar of the Community United States 7174 Posts	Posted 05/28/2022 6:15 pm The white crud is what zinc turns to when it is exposed to oxygen. Rot. Report this Post to the Staff
Earle42 Bedrock of the Community United States 10044 Posts	Posted 05/28/2022 7:33 pm How much squash could a Sasquatch squash if a Sasquatch would squash squash? Download and read: Grading the graders Costly TPG ineptitude and No FG Kennedy halves https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2 Report this Post to the Staff
	Replies: 8 / Views: 650

To participate in the forum you must log in or register.

All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

View Last 100 New Topics

View Last 100 Active Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.31 seconds to rattle this change.

1995 LMC Couriosity. Probable PMD, But Odd