What do you call this error ?

NGC blew it, in my opinion. It wouldn't be the first time. None of the grading services are particularly reliable when dealing with unusual-looking errors or those that are rare, novel, obscure, subtle, or complex.

 

Log in or Sign up to hide this ad.

Thank you Mike , for you very knowledgable answers.

 

Look at Wu's 12/11/2016 photos 233507.jpg and look at the Cu/Zn interface magnification area suggesting to me this was applied and not removed from experience. It's a tough call for a non-scientific background NGC authentication process. In my new book Forgotten Coins I talk about a new contemporary circulating counterfeit silver electrodeposition process beyond the Sheffield Plate process for the Mexican Cap and Rays in the 19thC where pure silver (99%) is applied over the host (i.e., any metal even copper). Why would anyone apply zinc over a copper host and leave it UNFINISHED? I would expect no polishing lines in the central core under a stereo microscope or possibly that also would have come out in the NGC validation? BTW with electrodeposition XRF surface analysis does not help due to the process of electrodeposition. However in a removal (i.e., etching) process sometimes a high organic like chlorides as described in my book can suggest an acid (HCL) removal process. For this circular area not with this accuracy though (i.e., circular area and texture at the interface going thin to thick) - IMO.

John Lorenzo
Numismatist
United States

 

In my Post#2 I called it a non error.. but now that I have a better understanding of the issue I'm inclined to considering it an error.

 

Here is one of several cents I own with a bulls-eye pattern of copper deposition (or zinc exposure):

 

This coin also shows an abnormal pattern of upset. For what it's worth, this coin was extracted from a PCGS slab.

 

Mike - let me know if another error of this type appears on EBAY. If I win you get a FREE Forgotten Book sent to you ... <VVBG>. Whatever ... see the same Zn/Cu interface as in the Wu coin. Great Off-Center!

John Lorenzo

 

I'll try to remember. They don't appear very often. Some of these errors, like the one I've shown, have an incomplete pattern of copper deposition (how and why it assumes this pattern is unclear). In other cases, it's due to the copper plating being scraped off or otherwise exposed in a circular pattern before the strike.

 

Although I never posted in this thread I added a few early likes that meant I had both crow and oatmeal for breakfast.

Steve

 

i have a coin 1942 that has a 1943 date on top of coin to the side oh cent

 

Welcome to CT...show us we love pictures.