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Pillar of the Community
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Cataloging some coins today, I came across a nickel that we previously graded as edge damage. However, I cannot shake the notion that it might be struck on a blank, also called a type 1 planchet. The coin faces look fine, only the edge is pitted, uneven, and dotted with verdigris. I just have a hard time imagining a PMD process that could scar the complete edge perimeter like that, but do nothing to the coin faces. Lamination is the only phenomenon that seemed realistic to me. I have been searching the Internet, but the only images of a coin struck on a blank that I could find were a cent on Error Ref, and the article included no images of the coin edge. However, I did look at the Error Ref type 1 planchet (blank) article, and the edge texture of the blank looks very much like this nickel. I imagine that the striking process in a smooth collar would generate a flat edge but do nothing to the pits and torn metal. Does anybody know where I could find edge images of a smooth-edged coin that is believed to have been struck on a type 1 planchet (blank)? |
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Pillar of the Community
 United States
6464 Posts |
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Pillar of the Community
United States
5193 Posts |
Thank you for the article .
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New Member
United States
13 Posts |
Great information, thank you Brandmeister!!
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Moderator
 United States
94892 Posts |
very interesting Brand.
Do you have an image of the one you came across?
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Pillar of the Community
United States
6464 Posts |
Edited by Brandmeister
06/15/2025 3:06 pm
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Pillar of the Community
United States
6464 Posts |
 Beyond the rough texture and pits, the seam is one reason why I think it might be a blank, not a planchet. There are, of course, many other possible explanations. The blank might have been dirty or corroded when entering the upset mill, and had that crud smashed into the edge. The alloy could have laminations or impurities. The upset mill could have been loose, and not rolled the planchet edge smooth. |
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Moderator
United States
187702 Posts |
Nice presentation!  |
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Pillar of the Community
United States
978 Posts |
One of my blank planchet's. Obviously no idea what year cent, but it weighs 3.12 and the edge is very odd.   "We are all flawed, some MD and some PMD." NYI |
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Pillar of the Community
United States
3330 Posts |
Quote:
One of my blank planchet's. Obviously no idea what year cent, but it weighs 3.12 and the edge is very odd. I just found this thread and I find the planchet with concave edge interesting! I may use the photos for educational purposes, giving credit, of course! Here is a quote that may be of interest. Of course it is not possible to assert that your planchet is the same as mentioned here. Since the date of publication is 2018, and since the mint has been intending to implement what it has learned from trials, it may be possible. Puzzled by the weight for this timing, though? "The Mint contracted with an independent company to perform a study on the formation of the coins' rims in the optimized design. The contractor used a prototype upsetting tool and tested several different profiles and methods of upsetting blanks and determined that a tapered upset with a concave facing formed the best rims of coins, and that tapered upset with a convex facing was nearly as good." Page 7, 2018 Biennial report to Congress. Edited by Pete2226
11/14/2025 2:31 pm
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Moderator
United States
15392 Posts |
That was a very informative NGC article, thank you for sharing it with us.
Nice photo presentation of your nickel edge. I'm leaning towards it having been struck on a Type 1 nickel blank.
Take a look at my other hobby ... http://www.jk-dk.art |
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Pillar of the Community
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Replies: 11 / Views: 1,272 |
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Posted 06/14/2025 07:53 am
