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 Replies: 9 / Views: 1,614 |
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Pillar of the Community
United States
663 Posts |
Edited by Agrippa
05/29/2014 02:36 am
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Moderator
 United States
56855 Posts |
Your coin is MD. Quote:
A coin that has a doubled mint mark after 1989 would be a, "doubled die mint mark right"? Technically yes but it would be a MD not an RPM. John1  |
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Pillar of the Community
United States
2651 Posts |
I agree it is MD. BUT if the Mint Mark was Doubled and it was Hub Doubling then the coin would be a Doubled Die.
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Bedrock of the Community
United States
62064 Posts |
If it is caused from hubbing, the correct term would be "Doubled die." No need to mention it as a mint mark. When were see the term mint mark we think of a RPM. Which it is not.
Doubled die: A die that has been hub doubled affecting the devices in various ways. (Thus the 9 types of doubled dies.)
RPM: The mint mark was re-punched and die not fall over previous punchings. This can be in 8 directions or in two other ways affected.
(Mint mark punchings stopped in 1989.)
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Pillar of the Community
 United States
663 Posts |
Does that mean mint marks were punched after the minting process? By hand?
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Bedrock of the Community
United States
62064 Posts |
On the pre-1990 coins. Yes. On the post 1990 coins it is part of the design. So since 1990 there is no longer a need for a mint mark punch.
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Pillar of the Community
United States
663 Posts |
That's interesting! Do you know why they didn't have it be a part of the die in the pre 90 years? Seems like a lot of work and an extra unnecessary step.
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Pillar of the Community
United States
4809 Posts |
My speculation, but the master engraving design is the common element and could be used by various mints to create their hubbing dies. The distinction comes when the mint mark was added (San Fran, Denver)to the working dies, so this was done by hand perhaps because the cost associated with making unique engravings or hubbing dies was prohibitive?
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Pillar of the Community
United States
663 Posts |
Hmmm, that would make sense. Being a big history kinda guy I find the history of this interesting. :)
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Bedrock of the Community
United States
62064 Posts |
There were other mints through the years. C (Charlotte, NC) CC (Carson City, NV) O (New Orleans, LA) D (Dahlonega, Georgia Gold coins from 1938-1861) D (Denver, CO 1906-date) P (Philadelphia, PA) S (San Francisco, CA) W (West Point, NY) The dies were made at the Philadelphia mint until 1996. Some dies are made since then at Denver mint.
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Replies: 9 / Views: 1,614 |
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Posted 05/30/2014 12:21 pm
