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1964 Doble D Mint Mark Nickel

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United States
6 Posts
 Posted 02/19/2020  4:40 pm Show Profile   Bookmark this topic Add Salem D to your friends list Get a Link to this Message
Hey, I'm just getting into coins and metals, so I'm a newbie. I don't know what it was that got me hooked so to speak but after watching many videos on YouTube about coins I started looking at my own change and seeing if I can spot anything interesting. So I came across this 1964 Jefferson nickel with a Denver mint mark that appears to have an error, the error being a D over a D.. the pictures really don't do it justice and sorry I don't have a better camera but in person with a magnifying glass the error is very noticeable. Just wondering if I'm mistaken and if I'm not what should I do next, thanks!
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United States
83885 Posts
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United States
43098 Posts
 Posted 02/19/2020  5:07 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
When looking at mintmarks on the coins, if the side towards the closest rim is looking different. It is probably die wear. That is what I'm seeing on your image. Die wear moves the devices towards the closest rim.

The reason I used this year, it that the steel dies and the steel planchets made the dies wear out a lot faster. So realizing this will help you to see this quicker when searching through coins. The other thing that affects the devices on the sides that are not closer to the rims is Machine Doubling. But MD can happen on either the closest or the furthest from the rim. On a RPM, the devices need to show a spread between the punching of the mintmarks in order to be a RPM. Note this one:

Even though the mintmark is larger than normal, it doesn't show a spread between the punchings.
What is Spread?:

Note how the partial mintmark punch is raised. That is because that punch into the die left an incuse mark, making a raised mark on the coins.

Here is another RPM. Note how the RPM is raised like the mintmark, but showing a spread between the two punchings:

If the area you are looking at doesn't copy the shape of a punch, then it can't be a RPM. It is is level with the surface, it may be just a stain.
Sometimes RPMs can show more than just two punchings:

But note on all of these, the RPM is raised above the surface of the fields.

CoopHome : RPM spread raised mintmarks
Richard S. Cooper
Some have asked about my images I use and I'm glad to say, you can now you can see the DVD in sections on youtube:
1. Intro, older coins, toned coins 2. Doubled dies 3. Die events, One of a kind errors 4. So called errors, Coin information 5. Coin information Types and Varieties, Overlays
Jefferson nickel doubled dies Wexler/Rebar complete listings

trail dies:
New Member
United States
6 Posts
 Posted 02/19/2020  11:10 pm  Show Profile   Bookmark this reply Add Salem D to your friends list Get a Link to this Reply
Ok I just went over and over this and I'm almost sure it's not a stain due to normal wear.. I'm pretty sure what I see is a double strike because that's what it looks like, a lot like the last picture you posted, thanks
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