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 Replies: 17 / Views: 2,071 |
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Pillar of the Community
United States
2734 Posts |
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Bedrock of the Community
United States
62064 Posts |
A lot of grimy grease. Ooooooooooh.  |
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Pillar of the Community
2145 Posts |
Agree with Coop. Seems to be something on the surface - give it an acetone soak and see if it comes off.
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Bedrock of the Community
United States
94367 Posts |
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Pillar of the Community
 United States
2734 Posts |
Thanks for taking a look guys. Quote:
Seems to be something on the surface - give it an acetone soak and see if it comes off. Being a possible mint made error I will not be doing this. "Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Bedrock of the Community
United States
62064 Posts |
Most often the grease is clear, but I guess it could get dirty:   |
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Bedrock of the Community
United States
10635 Posts |
Quote:
Being a possible mint made error I will not be doing this. Does grease retained from the mint increase value?  |
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Pillar of the Community
United States
2734 Posts |
Quote:
Does grease retained from the mint increase value?
I'm not sure but I think you're asking me if I believe this error has a premium value and I'll say yes. To me it's worth at least 5c. Intrinsic value is about 3c (copper melt) and if it is a mint made error and it's BU I'll say it's worth at least 5c. Maybe I'm being too optimistic but I know dipping it acetone isn't going to help. I haven't seen many examples of this type of granular die fill error and find it exciting to learn about and collect errors of all types wether "valuable" or not. http://www.error-ref.com/?s=retained+die+fillEdited by CoinHI
05/24/2021 11:40 am
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Pillar of the Community
United States
573 Posts |
I recall a similar coin having been posted recently, albeit without the black material, but with an unusual wear pattern and I think the consensus on that coin was that it likely got caught in a conveyor system, causing the rubbing like wear (that coin was otherwise uncirculated).
I see similar wear on the reverse, most noticeably on the steps and columns.
The black material could be rubber (or something like it) rather than grease, from having been caught or perhaps rubbed by a belt or a guiding wheel made of a rubber substance.
The rectilinear shape of the anomaly on the reverse does not resemble the retained die fill example nor does the reverse have any other weak areas of striking, which you would expect if the die was filled with foreign material.
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Pillar of the Community
United States
2734 Posts |
Thanks HGK3, I also thought it could be wheel marks of some sort considering the direction is parallel on both sides. What made me reconsider was the composition of the material does look like it has metal flakes which is consistent with the die fill.
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Pillar of the Community
United States
2869 Posts |
Why not acetone soak? It won't hurt the coin and it will not decrease the value.
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Pillar of the Community
United States
4963 Posts |
The fact that the contaminant is in the recesses but not the columns makes me think this is post-strike. If that had come from the die, it would have been only on the high points, which is not really how die fill works.
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Pillar of the Community
 United States
5780 Posts |
Interesting since I've always considered these just a different type of mint grease than the clear stuff that was smeared on the coin during the manufacturing process.
This example seems to have the grease going in the same general direction on both sides. IMHO that indicates it was indeed on the dies at some point.
Thanks for posting CH.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
United States
4618 Posts |
I wouldn't try to remove the grease from the coin. It may or may not change the value of the coin, but it would lose some of it's unique qualities. I have a coin that shows as Struck Through Grease with a large section of the impacted grease still on the cent and it looks a lot like this. My Local Coin Shop dealer, who knew my collecting habits, set this coin aside for me because of the retained grease, as he thought it added to the error's appeal. It's a full red coin with really nice colorful toning around the outside edge of the anomaly. I'm STILL working on my imaging project for the errors in my collection. It may take some time, but I'll post the coin with a reference to this post some time in the Not Too Distant Future. Interesting coin!  ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! 
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Pillar of the Community
United States
573 Posts |
But if the die was filled with something, wouldn't there be weakness in the strike? I can still see the vertical lines in column 2, for instance, even though the substance is on both side of the column. Look at this example with it's obvious strike weakness: http://www.error-ref.com/retained-s...gh-die-fill/ |
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Pillar of the Community
United States
2734 Posts |
Thanks for the comments CCF. Yokozuna I look forward to seeing your example!
HGK3 - This happens post strike as far as I understand so there wouldn't be weakness showing. Maybe discoloration from the grease being dislodged?
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Replies: 17 / Views: 2,071 |
Posted 05/22/2021 2:45 pm
