1970-S Lincoln Memorial Cent Doubled Die Reverse / DDR ?

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Author	Replies: 4 / Views: 1,278
Coinvirgin Valued Member United States 123 Posts	Posted 04/18/2018 5:51 pm Just a few questions I need to ask... 1) What makes the devices on some copper coins look layered, similar to a flaky biscuit? 2) In your experience, does it make it more challenging to identify a potential DD? 3)is there a 1970s variety DDR on building? ( apologies for not using proper terminology with regard to the memorial.) 4) Coop, if you happen to read this post? Could you repost the mock-up you did with the proper labels for each area of the LM Building? Please * Moved by Staff moved to a more appropriate forum. * Report this Post to the Staff

Crazyb0 Rest in Peace 10197 Posts	Posted 04/18/2018 6:07 pm May I suggest you find a copy of Charles Daughtrey's "Looking Through Lincoln Cents". Chuck is the founder of http://www.coppercoins.com and the system of labeling he developed for ID recognition of DDO / DDR/RPM's. In this he gives a short synopsis of the die making process, a detailed description of the doubled die process and the 9 forms of hub doubling that is seen on coins, a section on RPMs, grading and attribution. Then there are examples of doubled dies and repunched mintmarks on 1909-2004 Lincoln cents. This and his addendum with updates helped me an awful lot in my beginning understanding and recognition of doubled events. Get in touch with Tootallious, he's in your neighborhood. He may be able to send you more info as well. Edited by Crazyb0 04/18/2018 6:11 pm Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 04/18/2018 6:45 pm Wexlers site shows how dies are made. errorvariety.com shows the 9 classes. John1 Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 04/18/2018 7:05 pm Good advice. Your example may have some MD, but pics aren't sharp enough to delineate it. Report this Post to the Staff
Coinvirgin Valued Member United States 123 Posts	Posted 04/18/2018 9:13 pm Great advice, thank you! Report this Post to the Staff
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1970-S Lincoln Memorial Cent DDR?