1984-D Doubled Die Reverse / DDR Nickel New Find? - Page 2

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Author	Replies: 23 / Views: 7,732	Page: of 2

Kevin43 Valued Member United States 252 Posts	Posted 03/13/2016 8:05 pm So MD on a nickel can show rounded and not flat like I said never seen this type on a penny and that is what I look at the most Report this Post to the Staff
Kevin43 Valued Member United States 252 Posts	Posted 03/13/2016 8:13 pm Guess ill put it up for future reference any ways after I find me a strong die clash I am going back to pennies,thank you for your help coop. Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/14/2016 01:28 am Kevin, the same principals apply to all denominations. There are different types of worthless doublings, all are encompassed in Strike Doubling. Strike Doubling, in the purest sense, is an extra strike after the intended strike. It strikes part of the device made by the first strike; in so doing, it changes the device, reducing it's original size which is replaced by "doubling". The doubling is on one side of the original device and is flat, and approximately 1/2 the height (from the field), of the original device. There you have Strike Doubling. Strike Doubling, in recent years, has been expanded to encompass other forms of worthless doubling that occurs at the time of the strike, but only requires one strike. MD (Machine Damage), is generally the result of wear on the die, producing "doubling" on one side, or two or three sides, or all around, or even some distance from the device. There are nine forms of genuine Die Doubling. They all originate on the die, and require only one strike. The most valuable and sought after, is depicted here in one of Coop's pictures. The famous 1955 penny has a wider spread, but of this same type. I figure you probably knew most of what I have written, I just hope now you can see how the "doubling" on your coin doesn't necessarily have to appear rounded or flat. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 03/14/2016 02:32 am Actually is just one strike (proof coins are struck 2 or more times) On the business strike cents, a die movement or bounce alters the coin after the strike. Movement by the machine, dies or bounce. Just one strike. The movement can be in two directions from the same single strike making what some call triple Machine Doubling. But it all happens on a single strike on business strike coins. On proof coins the second strike can create field doubling. (a distortion of the devices, that move the metal at the field level of the devices. The happen mostly on proof coins because of the second or more strikes that are needed for the detail proof coins should have. But on other areas on the flat field damaged coins, there is also machine damage on other devices that doesn't touch the field like the images above. It is like the normal MD we see on other coins. This is on proof coins where you can have both. MD and Flat field doubling. Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/14/2016 02:41 am Sounds to me like proof coins are in double jeopardy. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 03/14/2016 04:32 am Here is a link to other forms of doublings http://koinpro.tripod.com/Articles/...Doubling.htm John1 Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 03/14/2016 1:50 pm Maybe so CC. But they are my favorite on the pre frosted coin era. So I like 1960-1964 proof cents and nickels to search. Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/14/2016 4:50 pm Yes, I can certainly understand that. Report this Post to the Staff
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1984-D DDR Nickel New Find?