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 Replies: 16 / Views: 4,422 |
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Pillar of the Community
United States
1386 Posts |
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Pillar of the Community
United States
5964 Posts |
Sorry but I think it is MD or wear. That's where it would show first because the mintmark is such high relief. jmo
Edited by CoinMasters
01/30/2018 12:17 pm
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Bedrock of the Community
United States
62064 Posts |
It is Machine Doubling. Note the affected area is all the same height on the mint mark. It is flat shelf like. If it was a RPM, then the devices would be raised, not lower than the mint mark.  If this were a legit item, it would have been called a RPM. (Re-Punched-Mintmark) That would designate it was a D/D punch. (which the OPs coin is not) If it would be a OMM, then it would be a mint mark over another different mint mark. (Over-Mint-Mark) The example I posted above is a OMM. It is a Denver punch over a San Francisco mint mark punch. Note again that the punching would be raised above the field like the added punch mark. They would be raised and visible. |
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Pillar of the Community
 United States
1386 Posts |
I can understand that. From what I have read that there are cases of OMM of the same MM such as a tilted or slanted mark. I don't believe this is one,But a double struck MM from the same mint is possible.
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Bedrock of the Community
United States
62064 Posts |
Actually the mint mark punch is used several times on the die to get the correct depth. It is the Miss alignment of the mint mark that causes the RPMs. Some RPM mint marks has several punches on them.  |
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Pillar of the Community
United States
1386 Posts |
Ok I'm officially confused. So how does MD show up only on the MM, but not the rest of the coin? Then how can a MM be struck multiple times and not be considered a OMM or RPM? I'm just trying to figure this out.
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Bedrock of the Community
United States
62064 Posts |
It depends on how high/direction the die bounces. Sometimes mint marks are taller than other devices. We often see this on quarters that the mint mark is affected, when all the devices are around that area are not touched. Other times, with less bounce, the many of the devices are affected. So direction of the bounce and height make a difference. I would like the to see the area to the left on the building to see if that is affected by Machine Doubling. There is a an area just out of range that often shows contact on a vertical part of the building. |
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Rest in Peace
United States
17900 Posts |
I can certainly understand your questions and your thought of it having an RPM.
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Pillar of the Community
United States
5964 Posts |
Quote:
it would show first because the mintmark is such high relief. On the pre 1989 (hand punched) coins, the punches usually went into the dies deeper than the other devices. Being the highest device on the coin often made them the only device to exhibit Strike Doubling because of high die bounces. What tipped me on your coin was the reduction of the size of the mint mark. On a RPM the last punch is generally not reduced. If the "doubling" on a reduced device is flat and shelf like, it's Strike Doubling, otherwise it's die wear. |
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Pillar of the Community
United States
1386 Posts |
I do appreciate it all. Looks like I need to study MM's better!
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New Member
Philippines
18 Posts |
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Bedrock of the Community
United States
74919 Posts |
Dostocalo14, I'm not an expert at grading, but I'll give a good guess. I would say MS-63.
Errers and Varietys.
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New Member
Philippines
18 Posts |
thats make sense..thank you man atleast I have an idea..thanks again
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Bedrock of the Community
United States
74919 Posts |
You're very welcome. That's an idea of what grade it could possibly be in. Other CCF members will chime in later and they'll probably give you their opinions on what this Nickel could grade at.
Errers and Varietys.
Edited by Errers and Varietys
06/10/2018 12:02 am
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New Member
Philippines
18 Posts |
by the way does it looks like rpm?  |
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Bedrock of the Community
United States
74919 Posts |
To me, it doesn't look like an RPM.
Errers and Varietys.
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Replies: 16 / Views: 4,422 |
Posted 01/30/2018 12:29 pm
