1993-P Lincoln Memorial Cent / LMC Possible Doubled Die Reverse / DDR Or Machine Doubling

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Author	Replies: 13 / Views: 2,499
Xonor13 New Member United States 25 Posts	Posted 01/15/2018 6:32 pm * Edited by Staff to Add Year / Mintmark / Denomination to Title. Titles are Important! * I have been very bored lately, so I just picked up this new hobby of finding errors on coins. I have been interested in error coins for a while now, and I just decided to actually get more in depth with it. I'm only 18, so I don't have much money to work with and that is why I am starting with pennies. Anyways, I came across this coin that caught my attention when I was looking through coin rolls. There appears to be doubling on the ONE CENT on the reverse of the penny at the bottom of the letters. I'm no expert when it comes to telling the difference between an actual double die or just Machine Doubling. Here are some rough pictures of the penny I took with my phone. I am expecting a USB microscope in the mail tomorrow, so I might be able to take some better looking pictures with that by then. Report this Post to the Staff

John1 Moderator United States 56855 Posts	Posted 01/15/2018 6:38 pm to CCF. Looks like MD. Your pics are very good, practice a little with lighting. What brand and model scope? John1 Report this Post to the Staff
CJ18850 Pillar of the Community United States 575 Posts	Posted 01/15/2018 6:43 pm I'm not an expert, but I would say machine/mechanical doubling where there is a shelf like appearance rather than a true doubling appearance. Edited by CJ18850 01/15/2018 6:44 pm Report this Post to the Staff
Crazyb0 Rest in Peace 10197 Posts	Posted 01/15/2018 6:44 pm Wanna learn about error coins? Lot of references here at CCF besides the threads and the books listed below. Try checking out http://www.error-ref.com you will find everything (and more) then you'll ever need to know about error coins. Hint: if you want easy, read these... BTW, the doubling you see under the letters is called Plate doubling, is the effect of striking a thin clad copper layer. Edited by Crazyb0 01/15/2018 6:46 pm Report this Post to the Staff
Xonor13 New Member United States 25 Posts	Posted 01/15/2018 7:08 pm This is the microscope I'm getting. https://www.amazon.com/DGCUS-Digita...3;microscope It was cheap and it looks good enough for what I think I need. I don't know if this is the right way to reply to someone. I find this forum to be different from others that I have been on. ANOTHER QUESTION! How would an error like this occur to a coin? What are the chances of something like this to happen? Report this Post to the Staff
Crazyb0 Rest in Peace 10197 Posts	Posted 01/15/2018 10:08 pm Are you referring to the Machine Doubling on the ONE CENT? Often, a common error . MD is caused by a bounce upon the initial strike. Kinda like a hammer hitting a nail, bounces, bleeds off energy. If it comes down a bit off, it affects the details. MD reduces the size of detail. Your PDD, plate disturbance doubling is thought to happen by air trapped in between the layers "squirting" around. This could also be what is known as DDD, Die Deterioration Doubling, becuz it is towards the outside, the way metal movement goes in late die states. Report this Post to the Staff
Mrzllewellyn Pillar of the Community United States 1901 Posts	Posted 01/16/2018 04:54 am Don't get married and have kids cause you will be doing cents then as well even if you make over 20/hr lol I agree with crazyb0 he's taught me a lot I prefer cents to search anyway I got some nickel and a couple done rolls last trip and I enjoyed the cents way more and found way more errors and varieties. I think I kept 1 dime and a nickel compared to my 20 cents just my opinion have fun hunting Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 01/16/2018 04:56 am Good price on that scope. 1000x is way much for coins,1x-200x is the range you need.You will have a learning curve with the lights . I had to block off all but one LED and put a filter on that one with both of the scopes I have.When I need more light I use a hand held LED flashlight.Practice a lot with it and good luck. John1 Report this Post to the Staff
Mrzllewellyn Pillar of the Community United States 1901 Posts	Posted 01/16/2018 06:39 am with John you will have fun getting the light right I got to where I turned mine off completely they did more harm then good. I use a separate light source now. I still have trouble with lighting now and again lol but no one's perfect. Good luck hope you get the hang of it Report this Post to the Staff
cookiemonster Pillar of the Community United States 1335 Posts	Posted 01/16/2018 07:15 am Report this Post to the Staff
jbuck Moderator United States 188696 Posts	Posted 01/16/2018 09:57 am to the Community! Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 01/16/2018 10:37 am to the CCF! Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 01/16/2018 1:45 pm Well I'm seeing Die Deterioration on the bottoms of ONE CENT. Die Deterioration happens when the die ages. You can also see it on the '3' on the obverse of your coin. As the die wear it creates a wear pattern towards the rims as the metal is pushed into the dies deeper devices. After this happens several hundreds of thousands of times, the creates a die wear pattern and appears on the outside edges of devices closest to the rim direction. This deterioration usually7 happens next to the devices, but usually not on the devices. Before the single squeeze dies the devices were taller and the die wear affected the devices themselves: But both are caused by die wear, but because the devices profiles are different, they wear differently The lower profile singles squeeze dies makes it show near the devices I call these Die Deterioration. The higher profile multi-squeeze devices wear on the sides near the rim first and I now call them die wear. But both are actually the same, but they do look different on the coins. coophome= Die Deterioration wear Report this Post to the Staff
Xonor13 New Member United States 25 Posts	Posted 01/16/2018 4:16 pm You guys are right. It is very difficult to get the lighting to look good. Here are a few pictures I took with my new microscope. Also, is an error like this worth keeping? What would even be the value of an error like this? Report this Post to the Staff
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1993-P LMC Possible DDR Or Machine Doubling