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 Replies: 28 / Views: 2,392 |
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Pillar of the Community
 United States
4038 Posts |
I was only referring to the possibility of it being an RPM. For sure it is a Doubled Die.
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Pillar of the Community
Canada
6244 Posts |
I am skeptical about this coin. Big excitement about a few coincidential markers very common for that year. 013 the D do not match. 009 and 012 are far. So when we say DD where it is?
If you look of full coin photos, I do not see that subtile spread.
Can someone clarify me on?
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Pillar of the Community
United States
4038 Posts |
The die doubling seen on LIBERTY in 1957 is unusual and controversial. No notching is noted. Honestly the doubling looks more like MDD than true die doubling as we have all been teaching, where the features are expanded, and any offset creates a notch between the two hubbings. I personally don't believe the doubling seen on these coins can be explained with the designation they have been given, ie Type IV (offset hub) + VIII (tilted hub). Both Type IV and VIII will create widened features, which are not present on these.
My older working theory is that these were created by a light/offset/partial press from the master die onto several working hubs, ie a form of MDD but at a much earlier level. However, if that were the case, then we'd see multiple dies with the same doubling, and AFAIK that is not the case. All that said, these coins do indeed show some form of doubling that seems to be unique to a particular die, so I am OK with calling these DDOs, and just not understanding them yet.
Edited by rmpsrpms
10/12/2023 10:45 am
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Pillar of the Community
 United States
6540 Posts |
 Just to be clear, what we are talking about are the lines that I have indicated? Wow. I would have 100% tossed that back on the pile as Machine Doubling. Are there other years where that manner of doubling has been attributed on VV/WDD/CC? |
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Pillar of the Community
United States
981 Posts |
Nice find. I too will be re-checking all my 57's for this subtle DDO. "We are all flawed, some MD and some PMD." NYI |
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Pillar of the Community
 United States
1265 Posts |
Thanks again.. I'm going to do some more research on the "possible" RPM. Vista does show that the 1957 D has a RPM-010, but I have not had the chance to review. Anyway, It's going in my DD folder.
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Pillar of the Community
United States
4038 Posts |
Quote:Just to be clear, what we are talking about are the lines that I have indicated? Wow. I would have 100% tossed that back on the pile as Machine Doubling. Are there other years where that manner of doubling has been attributed on VV/WDD/CC? Yes, those are the pickup points for that particular DDO. There are several like this. For sure it's not MDD, though indeed it looks like it, with the flat surface and no widening or notching. VV has 9 different listings similar to this. Edited by rmpsrpms
10/12/2023 3:06 pm
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Pillar of the Community
United States
6540 Posts |
Hm. Yeah, it does seem strange that a normal-width device could be generated with separation lines. I will put that on my list of things to learn more about! Good discussion so far, definitely interesting stuff.
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Pillar of the Community
United States
1265 Posts |
I have two other 57 D cent coins that have the same " doubling". I believe they came from the same roll years ago. One of them only has the die chip on the 9 in the date and not the 5 and 9 like this one. I'll try to find them.
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Pillar of the Community
United States
7174 Posts |
I have found as many as 15 in BU rolls of 57s. Also 2 or 3 different in the same roll. On some of them there isn't much difference.
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Pillar of the Community
Canada
6244 Posts |
I think rmpsrpms explain on the best this kind of "DD". Personally I go to the theoremas of MDD. The lite spread I finded in many DDD early stage, so it is not an mark for assign DD. |
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Pillar of the Community
United States
4038 Posts |
MDD happens in an inconsistent way due to the dies being loose in the press. Die Doubling causes every coin to look the same, since it is the die itself that has the doubling, rather than it being dependent on the process. These '57 DDOs are all the same, with no process variation, so for sure the doubling is present in the die.
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
United States
1265 Posts |
mpsrpms.. I have to agree with you. The two other 57 D cents are exactly the same except for the die chips..
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Replies: 28 / Views: 2,392 |
First Page
Posted 10/12/2023 12:33 am
